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2017-05-19Back-fill some functionality for CFX_UnownedPtrTom Sepez
Add Release() method, type-convertible compares and assigns, and right hand vs. left hand comparisons. Change-Id: I96b1112e328802143d314aa6c92948f26583fa90 Reviewed-on: https://pdfium-review.googlesource.com/5731 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-05-19Move CCodec_ModuleMgr ownership to CPDF_ModuleMgr.Lei Zhang
More straight forward than CFX_GEModule owning in and CPDF_ModuleMgr holding a pointer to it. Remove assumptions that the codec modules may return nullptr, and do IWYU. Change-Id: Iba7fc3c7ec223fd6d29a1ab74ed13d35689bc5d5 Reviewed-on: https://pdfium-review.googlesource.com/5654 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-05-19Remove image dimension params that are never used.Lei Zhang
Change-Id: Ib219e23efdcb128772c4c3138531363af53780a1 Reviewed-on: https://pdfium-review.googlesource.com/5652 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-05-18Add more CFX_UnownedPtr usage.Tom Sepez
One lifetime issue was fixed by passing CPDF_RenderStatus into Continue() methods rather than holidng a pointer which was going stale. Bug: Change-Id: I63b9dce4c1a0d1377cc407b5460535f7c916a040 Reviewed-on: https://pdfium-review.googlesource.com/5659 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-05-18Use UnownedPtr to check CFX_*StringC lifetimeschromium/3104Tom Sepez
Change interform to avoid temp StringC with dangling ptr. Change-Id: I8d8659973bcdf2cdbcaa6efa6012e4acce5f1604 Reviewed-on: https://pdfium-review.googlesource.com/5571 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-05-18Fix typo in CFX_ImageTransformer::ContinueNicolas Pena
This CL fixes a typo introduced in: https://pdfium-review.googlesource.com/c/4495/3/core/fxge/dib/cfx_imagetransformer.cpp#395 Bug: chromium:723976 Change-Id: I629d1e61054805f768356fce44c25f40f9346beb Reviewed-on: https://pdfium-review.googlesource.com/5634 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-18Fix a situation where images are not properly rendered.Lei Zhang
This regressed in commit e21fe98. When the image's bpc is a multiple of 8, there exists a colorspace, and there is a Decode parameter, the image data source was incorrectly pointing to a data structure that only contained black pixels. BUG=chromium:718762 Change-Id: I5d3fa739e41726b4ed1ebc16465e17f83fff9f8d Reviewed-on: https://pdfium-review.googlesource.com/5333 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-05-17CFX_UnownedPtr: check during assignment time as well.Tom Sepez
In particular, doing m_pPtr = nullptr; in your dtor to evade this check will not longer work. Fix slight mis-ordering observeds in CFX_Font and CPDFXFA_Context. Change-Id: I3e6137159430333b091364021283a54a13d916b5 Reviewed-on: https://pdfium-review.googlesource.com/5570 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-05-17Reland: Small fix in CPDF_TrueTypeFont loadNicolas Pena
The ToUnicode map should not be ignored when it exists. Doing so can cause a charcode to be assigned an incorrect glyph index, and will result in garbled text. Previously, some bots failed with 'unable to open' the .png file. Bug: chromium:665467 Change-Id: I435a73647eadcc3ba37bb0120f3b5cee381ae7a3 Reviewed-on: https://pdfium-review.googlesource.com/5610 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-17SkPictureRecorder.h includes less, so we have to IWYUchromium/3103Mike Reed
Bug: Change-Id: I294e765916f35ef933142789179a06ffad67fc31 Reviewed-on: https://pdfium-review.googlesource.com/5494 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Reed <reed@google.com>
2017-05-17Gif: Detect string decoding errorsNicolas Pena
This CL adds some checks to make sure the DecodeString method does not go out out control: If code is equal to code_table[code].prefix, it will try to loop forever. Even if that's not the case, avoid reading a negative position from the stack. Bug: chromium:722672 Change-Id: I638f91542ba21f3a9915198fef853cc3cf94f4f1 Reviewed-on: https://pdfium-review.googlesource.com/5513 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-17Revert "Small fix in CPDF_TrueTypeFont load"Nicolás Peña
This reverts commit dde95d8be9bc2817e34429fc38ee6d89d6d5ab75. Reason for revert: the test added is flaky Original change's description: > Small fix in CPDF_TrueTypeFont load > > The ToUnicode map should not be ignored when it exists. Doing so can cause a > charcode to be assigned an incorrect glyph index, and will result in garbled > text. > > Bug: chromium:665467 > Change-Id: I21c1bf560a0731d974191d4189ea730ef9868334 > Reviewed-on: https://pdfium-review.googlesource.com/5512 > Reviewed-by: Lei Zhang <thestig@chromium.org> > Commit-Queue: Nicolás Peña <npm@chromium.org> > TBR=thestig@chromium.org,tsepez@chromium.org,dsinclair@chromium.org,npm@chromium.org NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true Bug: chromium:665467 Change-Id: I704a34f326d31018061bcfd857fb25f7e4ee4cc2 Reviewed-on: https://pdfium-review.googlesource.com/5493 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-16Be skeptical of bare |new|s.Tom Sepez
In particular, prefer an explicit .release() call when handing ownership of an object to a caller across a C-API. Change-Id: Ic3784e9d0b2d378a08d388989eaea7c9166bacd1 Reviewed-on: https://pdfium-review.googlesource.com/5470 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-05-16Small fix in CPDF_TrueTypeFont loadNicolas Pena
The ToUnicode map should not be ignored when it exists. Doing so can cause a charcode to be assigned an incorrect glyph index, and will result in garbled text. Bug: chromium:665467 Change-Id: I21c1bf560a0731d974191d4189ea730ef9868334 Reviewed-on: https://pdfium-review.googlesource.com/5512 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-16Introduce CFX_UnownedPtr to detect lifetime inversion issues.Tom Sepez
There are places where an object "child" has a raw pointer back to object "owner" with the understanding that owner will always outlive child. Violating this constraint can lead to use after free, but this requires finding two paths: one that frees the objects in the wrong order, and one that uses the object after the free. The purpose of this patch is to detect the constraint violation even when the second path is not hit. We create a template that is used in place of TYPE*. It's dtor, when a memory tool is present, goes out and probes the first byte of the object to which it points. Used in "child", this allows the memory tool to prove that the "owner" is still alive at the time the child is destroyed, and hence the constraint is never violated. Change-Id: I2a6d696d51dda4a79ee2f00a6752965e058a6417 Reviewed-on: https://pdfium-review.googlesource.com/5475 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-05-16Simplify ContrastAdjust().chromium/3102Lei Zhang
Add a few constants in the process. Change-Id: Id69b939e4ea6a3de879e0a1f29d1453e95c838db Reviewed-on: https://pdfium-review.googlesource.com/5552 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-05-15Remove gamma codeDan Sinclair
The gamma value is always 2.2, which means the table entries all point to themselves. Remove the usage of the gamma table. Change-Id: Idbb06015e8acd9f106f4bd1da5ef06563fb26296 Reviewed-on: https://pdfium-review.googlesource.com/5352 Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-15Remove unused flags from CPDF_CreatorNicolas Pena
The only user of CPDF_Creator is FPDF_Doc_Save, and it only uses flags 1 or 2 when calling Create. Thus, the other two flags will never be set. Change-Id: Ib2eb0ce5585469c7749f0ab350855f1c6a2bba08 Reviewed-on: https://pdfium-review.googlesource.com/5491 Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-15Gif: error out on invalid code sizeschromium/3101Nicolas Pena
From the Gif spec: 'The output codes are of variable length, starting at <code size>+1 bits per code, up to 12 bits per code. This defines a maximum code value of 4095 (0xFFF).' 'Because the LZW compression used for GIF creates a series of variable length codes, of between 3 and 12 bits each' Bug: chromium:722115 Change-Id: Ic9cff99e6012195a6b5173693b029dc710285688 Reviewed-on: https://pdfium-review.googlesource.com/5490 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-05-15Convert CPSOutput to an IFX_WriteStreamdan sinclair
This Cl updates CPSOutput to inherit from IFX_WriteStream and converts the CFX_PSRenderer to accept an IFX_WriteStream instead of a CPSOutput. Change-Id: Ibde5c7da1c2f6df0a10cb6e9a470e18fbab167b8 Reviewed-on: https://pdfium-review.googlesource.com/5431 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-15Add a WriteString method to IFX_WriteStreamdan sinclair
This Cl allows passing a CFX_ByteStringC to IFX_WriteStream along with the buffer method. This makes it easier to pass C-style strings to the stream. Change-Id: I1051eb3ba17c7fbd42984c14dc60cbce24d72f3f Reviewed-on: https://pdfium-review.googlesource.com/5430 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-12Rename ErrorData and fix potential leakchromium/3100chromium/3099Nicolas Pena
This CL fixes a leak that can be caused by a longjmp in ErrorData. The method is renamed to express the fact that it includes such, and a followup should remove the jmps altogether. Bug: chromium:721488 Change-Id: Iefcc82a77a30ff77b7973b05611440a8d5bf275e Reviewed-on: https://pdfium-review.googlesource.com/5450 Commit-Queue: Nicolás Peña <npm@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-05-12Merge FXGIF_Context and CGifDecompressor into CGifContextchromium/3098Nicolas Pena
Change-Id: I60c9cbd83ff9e7a30a5a570a6ad1cf8f52360c07 Reviewed-on: https://pdfium-review.googlesource.com/5410 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-11Use clamp() in a couple more places.Lei Zhang
Change-Id: I9b7a1c101e3c73d0270f9216225e5a13d9937b97 Reviewed-on: https://pdfium-review.googlesource.com/5332 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-05-11Rename render device classesDan Sinclair
This Cl renames the CFX_RenderDevice subclasses to make their usage clearer. Change-Id: Ie820b57df9a3743ce8c6893fb483b398a1f1bdbe Reviewed-on: https://pdfium-review.googlesource.com/5390 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-11Remove unused GetPlatformSurface and GetDC methodsdan sinclair
The times we need the DC we call ::GetDC to retrieve it from the platform. These methods are unused. Change-Id: If83aa9b37ae2231d8029db6f2e6d8d17f1825611 Reviewed-on: https://pdfium-review.googlesource.com/5350 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-11Do not use vector data() when it is emptyNicolas Pena
Before, all pointers were being initialized to 0. After raw pointers were changed to vectors, data() was used in some cases, but now no longer returns nullptr when it is supposed to. This CL fixes that. Bug: chromium:721417 Change-Id: Ia31b75b18dc17d7eed48538145fe5d0d59668843 Reviewed-on: https://pdfium-review.googlesource.com/5353 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-11Move map and codec loading into managerDan Sinclair
This Cl consolidates the code to load maps and codecs into the CPDF_ModuleMgr class instead of putting it directly into fpdfview. Change-Id: Ia08f212f43a33e51ab1c7832051ee4f28eecb50d Reviewed-on: https://pdfium-review.googlesource.com/5335 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-05-11Fixup Initialize spellingchromium/3097Dan Sinclair
Change-Id: Ibd8d70264d79afc0baabaa5093aceb21ee777196 Reviewed-on: https://pdfium-review.googlesource.com/5334 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-11Stop rendering if a span length overflowed in AGGNicolas Pena
In AGG, len is of type coord_type, which we have as int16_t, but we can add to it large values, causing it to become negative. Stop the rendering when that occurs. Bug: chromium:719258 Change-Id: Ic7497666b01220a9cd3e7d749f1fc6ae4a210870 Reviewed-on: https://pdfium-review.googlesource.com/5370 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-10Split DCT decoder creation from CPDF_DIBSource::CreateDecoder().Lei Zhang
Change-Id: Ia0ea49f0460fcb8e55542f237d321bb9207aa8e1 Reviewed-on: https://pdfium-review.googlesource.com/5250 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-05-10Replace operator bool with HasRef() in classes with a CFX_SharedCopyOnWrite ↵Lei Zhang
member. Change-Id: I51e30d298e87b9ae0d5aca83b2f1d6787efce70a Reviewed-on: https://pdfium-review.googlesource.com/5290 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-05-10Store the offset in the archive bufferDan Sinclair
This Cl moves the implementation of the archive buffer behind an IFX_ArchiveStream interface. The buffer holds the current offset and the offset parameter is removed from the CPDF_Creator and various other methods. Change-Id: Ia54e803b58bbfb6ef03fec4a940d2c056d541356 Reviewed-on: https://pdfium-review.googlesource.com/5255 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-10Cleaning up Edit codeDan Sinclair
This Cl conslidates if statements, converts int returns to bools where possible and various other cleanups in fpdfapi/edit. Change-Id: Ia31ecc69843117eb5ebfff449a6046a267d08e89 Reviewed-on: https://pdfium-review.googlesource.com/5190 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-10Cleanup CGifDecompressor part 2Nicolas Pena
Change-Id: I9754da8d1bf54b328761ac9d83fcc4a3518b4a73 Reviewed-on: https://pdfium-review.googlesource.com/5230 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-10Simplify CPDF_ImageRenderer::StartRenderDIBSource().Lei Zhang
Change-Id: Ia0a78be3320c5d6c3d0c40d4199cae1473e0e8dc Reviewed-on: https://pdfium-review.googlesource.com/5253 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-10Use FXSYS_IntToTwoHexChars() in more places.Lei Zhang
Change-Id: I84cd8e91a296119ecf80b7a092b886f291bebb45 Reviewed-on: https://pdfium-review.googlesource.com/4953 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-05-10Fix typos for the word start.Lei Zhang
Change-Id: Ic602126dc5407fcbb56dca5ec43e1824a5ca55b6 Reviewed-on: https://pdfium-review.googlesource.com/5251 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-05-09Create common CXML_Object base class for CXML_Content and CXML_Element.Tom Sepez
They should each know what they are rather than having an external ChildRecord struct to track the type. Change-Id: Ic647ba45569764073e944d30af1a96dccdc29eb3 Reviewed-on: https://pdfium-review.googlesource.com/5210 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-05-09Edit code cleanupDan Sinclair
Minor cleans in the fpdfapi/edit code. Change-Id: I7bb2f4add7c6e84f072501035b1f77c218174cca Reviewed-on: https://pdfium-review.googlesource.com/5152 Reviewed-by: Nicolás Peña <npm@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-09Cleanup of CGifDecompressor part 1Nicolas Pena
This CL changes the tag_gif_decompress_struct into CGifDecompressor. It cleans up a bunch of unnecessary function pointers and starts cleaning up the members of the new class. Change-Id: Id49cd8f5377dc8daaa15118551dadad4ddde7931 Reviewed-on: https://pdfium-review.googlesource.com/5170 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-05-09Move FPDF_FILEWRITE adapter to own fileDan Sinclair
This Cl moves the adapater out of the fpdfsave.cpp file into its own h/cpp files. The adapter was renamed for clarity. The CPDF_Creator was modified to take the adapter as a constructor param and the Create methods consolidated. Change-Id: Icb104f195ef532dda053c859aae356a8d4a7a54c Reviewed-on: https://pdfium-review.googlesource.com/5151 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-09Rename fpdf_edit_create.cpp to cpdf_creator.cppDan Sinclair
This Cl renames the fpdf_edit_create file to better match the cpdf_creator content. The CPDF_ObjectStream and CPDF_XRefStream code is moved out to their own .cpp files. Needed anonymous classes are split out as well. Change-Id: Ic83fb319ce28c816db82a4286e22032dc68811bc Reviewed-on: https://pdfium-review.googlesource.com/5171 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-05-09Use CXFA_TextUserData in place of CFX_Retainable where possible.Tom Sepez
Layering prevents the (newly-moved) CFX_Char from knowing about this class, so some casting is still required. Change-Id: I5b7556fdfa80d09e5116b171b01ab5e707763bf0 Reviewed-on: https://pdfium-review.googlesource.com/5172 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-05-09Remove editint.h and create individual headerschromium/3095Dan Sinclair
This Cl creates a cpdf_objectstream and cpdf_xrefstream headers from the editint header. Change-Id: I857981fa055ee9296cbd344860e55c67acf200ce Reviewed-on: https://pdfium-review.googlesource.com/5113 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-05-09Remove CPDF_Creator friendsDan Sinclair
This CL removes the friend declarations from CPDF_Creator and adds accessor methods instead. Change-Id: I6d8f67b5944aed34af00ff6ea9d23fe7d17cec18 Reviewed-on: https://pdfium-review.googlesource.com/5112 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-05-09Remove AppendObject from CPDF_CreatorDan Sinclair
The AppendObject method has been removed and the functionality moved to the individual CPDF_Object classes. Change-Id: I5446c6cc3e792d849acf77caed34b63a88f3a2d2 Reviewed-on: https://pdfium-review.googlesource.com/5072 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-05-09Cleanup CPDF_Creator defines and method namesDan Sinclair
This Cl removes un-needed prefixes from anonymous method names and cleans up various defines. Change-Id: If46a04c80460bb675af68d1e08d3093855d8fb19 Reviewed-on: https://pdfium-review.googlesource.com/5111 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-05-08Remove default params in CFX_DIBSourceNicolas Pena
Change-Id: I9306afed2747e3b0054adeea1d39916cac47f5c5 Reviewed-on: https://pdfium-review.googlesource.com/5091 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-05-08Check bits to decode will fit before decodingDan Sinclair
When decoding the CPDF_HintTable we read the dwDeltaGroupLen value out of the input stream which is a 16bit number. That value is then passed in to read a uint32_t of the object number. If we have a group length of > 32 bits we'll cause an undefined shift when we attempt to shift right more then 32 bits. This Cl bails out early if the dwDeltaGroupLen value is > 32 in order to stop the undefined shifts. Bug: chromium:718505 Change-Id: I919d6f4cd19826094a5e44d3a65d758029f5c236 Reviewed-on: https://pdfium-review.googlesource.com/5090 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>