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2017-04-25Fix a self-inclusion in third_party/base/stl_util.h.Lei Zhang
Change-Id: I7a2fc956236005fca4848bd2be6db4585bc4e7d7 Reviewed-on: https://pdfium-review.googlesource.com/4477 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-04-25Delete some CFX string ctors.Lei Zhang
Prevent implicit construction of CFX_WideString from non-wchar_t variables. Similarly prevent implicit construction of CFX_ByteString from non-char variables. Fix up CBC_OnedCodaBarWriter which tries to do the above, and simplify code there using pdfium::ContainsValue(). Same for CPDF_FileSpec. Change-Id: I3db7125a68ef3f64c2f235d38e974767cd083dc3 Reviewed-on: https://pdfium-review.googlesource.com/4478 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-04-25Test more OnedCode128WriterTest methods.Lei Zhang
Change-Id: Ifc6e98af8e9f8505edce8b04836fbe0d6ab5743d Reviewed-on: https://pdfium-review.googlesource.com/4476 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-04-25Use fx_extension.h utilities in more places in xfa/Lei Zhang
Change-Id: Id58c313aa446ecfa223e5c8edc095586b62a61fa Reviewed-on: https://pdfium-review.googlesource.com/4455 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-04-25Use fx_extension.h utilities in more places.Lei Zhang
Change-Id: Iba1aa793567e69acc3cc1acbd5b9a9f531c80b7a Reviewed-on: https://pdfium-review.googlesource.com/4453 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-04-24Add tests for BC_OnedCode128Writer encoding functions.Lei Zhang
Make encoding functions return pattern indices instead of pattern pointers for easier testing. Also remove some dead code. Change-Id: Ib80d84b2e6828bbc8920b931d77bbcd82427f01a Reviewed-on: https://pdfium-review.googlesource.com/4474 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-04-24Add FXSYS_wcsftime() to avoid termination on win.Tom Sepez
Bug: 712725 Change-Id: I3384385176410964a87b12c2587f68247ea80cc9 Reviewed-on: https://pdfium-review.googlesource.com/4454 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-24Use a pdfium-specific unittest main rather than gtest'sTom Sepez
We must initialize our partition allocator before calling into any test cases. We can then remove the FPDF_Test class, which did the same thing. Change-Id: I614480fa474b2032052857a02e94781f15a27a4e Reviewed-on: https://pdfium-review.googlesource.com/4473 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-24Use unique_ptr in CFX_SizeGlyphCacheTom Sepez
Fix illegal leading underscore in class name while at it. Change-Id: Idd138eb42f4a0676552aa02d7dda4c29d1877348 Reviewed-on: https://pdfium-review.googlesource.com/4438 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-24Nit cleanup in XFA widget codeDan Sinclair
This Cl cleans up nits in the remaining XFA widget code. Change-Id: I10f33ee2ab0ebdb06aeee582a04188fbd7a8bf9e Reviewed-on: https://pdfium-review.googlesource.com/4472 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-24Initialize colour valueschromium/3080Dan Sinclair
The colour values returned from the ColorSpace GetRBG methods may not have set a value. This CL updates the CPDF_MeshStream to always initialize the values to 0 so they can't be used uninitialized. Bug: chromium:714074 Change-Id: Id2db5eabe31d2ff19f9330b2bc5c681680cf461d Reviewed-on: https://pdfium-review.googlesource.com/4450 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-24Cleanup the XFA Bacode widgetDan Sinclair
This Cl cleans up the XFA barcode widget. The custom binary search is removed. Some code shuffled from the header to the cpp file. Nits fixed. Change-Id: Icad0d2b25b07ea36afc5a5922a79f55b82616486 Reviewed-on: https://pdfium-review.googlesource.com/4394 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-04-21Use unique_ptr in CFX_FolderFontInfo::m_FontListchromium/3079Tom Sepez
Avoid a string duplication along the way. Change-Id: I866c34ad1afb20b9578aeb7cabeb8a185674c884 Reviewed-on: https://pdfium-review.googlesource.com/4437 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-21Use unique_ptr in CFX_FontMgr::m_FaceMap.Tom Sepez
Change-Id: Ie34942e6e577dfa270417b17c59a51813f310d27 Reviewed-on: https://pdfium-review.googlesource.com/4436 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-04-21Add CFX_RenderDevice::AutoRestorer()chromium/3078Tom Sepez
Avoid cleanup on every return path. Change-Id: I6978adb6f31020d812ac88c5d46c703d1461d373 Reviewed-on: https://pdfium-review.googlesource.com/4435 Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-21Return unique_ptr from CPDF_Type3Cache::RenderGlyph().Tom Sepez
Change-Id: I0701c6e5a9c1789f5fe929778df0e2aa55d8bf00 Reviewed-on: https://pdfium-review.googlesource.com/4434 Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-21Return unique_ptr from CPDF_RenderStatus::CloneObjStates().Tom Sepez
Tidy a few nits along the way. Change-Id: Ia330464e787dc584004896d2b09c228dc2d6bbc3 Reviewed-on: https://pdfium-review.googlesource.com/4433 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-21Revert "Compare to epsilon instead of 0 in CFX_Matrix::SetReverse"Nicolas Pena
This reverts commit fbd9ea1db2f1bb7fa006e7304a1202afc683c142. Reason for revert: This check seems too strict BUG=chromium:714187 Original change's description: > Compare to epsilon instead of 0 in CFX_Matrix::SetReverse > > Since we are going to divide i by 0, it is better to compare it to epsilon > and avoid wonkiness from division by something too close to 0. > > BUG=chromium:702041 > > Change-Id: I8136d6063f8debd41cef37eaab7e4097b3f32f4b > Reviewed-on: https://pdfium-review.googlesource.com/3090 > Commit-Queue: Nicolás Peña <npm@chromium.org> > Reviewed-by: dsinclair <dsinclair@chromium.org> > TBR=tsepez@chromium.org,dsinclair@chromium.org,npm@chromium.org,pdfium-reviews@googlegroups.com # Not skipping CQ checks because original CL landed > 1 day ago. BUG=chromium:702041 Change-Id: Ia7d933fd3d8ce4957788341463866a04679d7f2b Reviewed-on: https://pdfium-review.googlesource.com/4432 Reviewed-by: Nicolás Peña <npm@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-04-21Fix Visual Studio build from GN generated filesDominik Röttsches
VS does not like to see <, > in the XML nodes of the build files. Work around this issue by replacing less-than and greater-than characters in the FreeType custom config include file path definitions with escaped quotes. BUG=pdfium:701 Change-Id: I879ade670158ccb4d435b65cde382c6e6b32e002 Reviewed-on: https://pdfium-review.googlesource.com/4330 Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Cary Clark <caryclark@google.com> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-04-21Replace FXSYS_iswdigit with std::iswdigit.Lei Zhang
Replace other one-off implementations as well. Change-Id: I2878f3fae479c12b7de5234ee3a26477d602d14d Reviewed-on: https://pdfium-review.googlesource.com/4398 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-04-21Change more fxbarcode to use return values.Lei Zhang
Change-Id: Idcc05fb8c5a1448f552b4db5ae131ad82aef4d59 Reviewed-on: https://pdfium-review.googlesource.com/4258 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-04-20Remove hand-written bsearch from cfx_xmlsyntaxparser.cppchromium/3077Tom Sepez
Convert IsXMLNameChar() to static method for easier testing without namespace pollution. Change-Id: I004557e74fde94d3582b0a2326e5e68b907b9690 Reviewed-on: https://pdfium-review.googlesource.com/4397 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-04-20Remove hand-written bsearch from cxfa_dataexporter.cppTom Sepez
Binary search over an array of 5 elements is overkill. Change-Id: I3a39e82035d67564012c11aaf78045e435d59a41 Reviewed-on: https://pdfium-review.googlesource.com/4396 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-20Cleanup some XFA widget codeDan Sinclair
This CL cleans up the nits in some of the XFA widget files. Change-Id: If72e7855a09a22b2ec8ad3ce297b142ce35f71c9 Reviewed-on: https://pdfium-review.googlesource.com/4395 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-04-20Take ContainsValue() change from base stl_util.hTom Sepez
Allows us to apply this same predicate onto ordinary arrays. Change-Id: I917be09ed5e55167657c9af97f45f2ea2dbc6ab4 Reviewed-on: https://pdfium-review.googlesource.com/4270 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-04-20Let {Argb,Cmyk}Decode return tuplesNicolas Pena
Change-Id: Ic4e766d9417f9a9ece5f9e4269d0f96e1e91639b Reviewed-on: https://pdfium-review.googlesource.com/4392 Commit-Queue: Nicolás Peña <npm@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-04-20Revert "core: allow building against system zlib"dsinclair
This reverts commit 36c5b170e722362d4b5f7cb6e4e0099ed227a307. Reason for revert: This appears to be blocking the roll into Chromium. https://chromium-review.googlesource.com/c/476165/ Original change's description: > core: allow building against system zlib > > In a way similar to the existing USE_SYSTEM_LIBJPEG. The default is of > course still the DEPS-based zlib checkout. > > Change-Id: I649e75beb1a19c4cf7abda42fa10ebe5babfe946 > Reviewed-on: https://pdfium-review.googlesource.com/4070 > Reviewed-by: Lei Zhang <thestig@chromium.org> > Commit-Queue: Lei Zhang <thestig@chromium.org> > TBR=thestig@chromium.org,dsinclair@chromium.org,npm@chromium.org,vmiklos@collabora.co.uk,pdfium-reviews@googlegroups.com # Not skipping CQ checks because original CL landed > 1 day ago. Change-Id: I1ee6fb002f444ff9b559ce6a69679e63de7ff9cc Reviewed-on: https://pdfium-review.googlesource.com/4393 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-20Convert IFX_MemoryStream to CFX_MemoryStreamDan Sinclair
The CFX_MemoryStream is the only implementation of IFX_MemoryStream. This CL removes the interfaces and uses CFX_MemoryStream directly. Change-Id: I2f43fa39e82dafa7673517d214ae15fd2d0df331 Reviewed-on: https://pdfium-review.googlesource.com/4391 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-20Do not insert null node if ParseAsXDPPacket_Config failsTom Sepez
Doing so trips an assert in the debug build but is harmless otherwise. This appears to be wrong since the beginning of time. Bug: 709793 Change-Id: I179f6944a3f7b2a89efa65a16078f6f58448ba4b Reviewed-on: https://pdfium-review.googlesource.com/4390 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-20Move fxcrt_stream code to fx_stream fileDan Sinclair
This Cl consolidates the stream code into fx_stream. Change-Id: I22a250b4ca6e342592b81260d2a918ebab7f60a2 Reviewed-on: https://pdfium-review.googlesource.com/4373 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-04-20Cleanup the fx_extension code.Dan Sinclair
This CL cleans up the fx_extension file. The stream code was moved to fx_stream. IFX_FileAccess was removed and CFX_CRTFileAccess split to its own file. Code shuffled from header to cpp file. Change-Id: I700fdfcc9797cf4e8050cd9ba010ad8854feefbf Reviewed-on: https://pdfium-review.googlesource.com/4371 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-20core: choosen -> chosenMiklos Vajna
Change-Id: I5b78fe4238a68bb6ba56aa76b53b315ef6f8574c Reviewed-on: https://pdfium-review.googlesource.com/3730 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-20Remove the friends of CPDF_FormFieldNicolas Pena
Added some public methods so that CPDF_FormField has no friends. Change-Id: I179537e3c6ea64cedaca5365010c34c1ad702c40 Reviewed-on: https://pdfium-review.googlesource.com/4370 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-04-19Split up CFX_DIBitmap::ConvertColorScaleNicolas Pena
The code is completely separated into CMYK vs RGB cases, so having two separate private methods is better. Change-Id: I67f885ee2f4393b722c6d6e770b230a5aa6b0cb1 Reviewed-on: https://pdfium-review.googlesource.com/4372 Commit-Queue: Nicolás Peña <npm@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Wei Li <weili@chromium.org>
2017-04-19Update IFX_CharIter::Clone to return unique_ptrDan Sinclair
This Cl converts the Clone method of IFX_CharIter to return a unique_ptr. The usages were all converting to a unique_ptr already. Change-Id: I1ca5ddd03eca8f21d616efb2b92fb27899c43c23 Reviewed-on: https://pdfium-review.googlesource.com/4351 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-19Rename array names to match codepage namesDan Sinclair
Rename arrays to use code page names to make it clearer what they represent. Change-Id: Ia7d74353f6bae5fd7f030c05675664dafda03a7a Reviewed-on: https://pdfium-review.googlesource.com/4350 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-19Cleanup codepage and charset definitions.Dan Sinclair
This Cl cleans up the unused defines in fx_codepage.h. The FXFONT_CHARSET_ defines are replaced with fx_codepage defines, this moves fx_codepage into core instead of xfa only. Static asserts are added to verify the public/ charsets match the fx_codepage charsets. Change-Id: Ie2f749e093de60a9a6743128a1fb087912e4cc96 Reviewed-on: https://pdfium-review.googlesource.com/4316 Commit-Queue: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-04-19Cleanup the fgas_language definesDan Sinclair
This CL renames the language defines to be country and language code instead of names. The XFA_LANG copies have been removed in favour of the FX_LANG variants. Change-Id: I7307c4128baa29b9c71b37278e018e95b5527e33 Reviewed-on: https://pdfium-review.googlesource.com/4317 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-04-19Move fde XML parser to coreDan Sinclair
This CL moves the XML parser from FDE into FXCRT and renames to CFX_ from CFDE_. Change-Id: I21a9590bf74daf5517df630d7e7a5de89da99ea4 Reviewed-on: https://pdfium-review.googlesource.com/4312 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-04-19Move CFGAS_Stream to CFX_SeekableStreamProxyDan Sinclair
This CL moves the FGAS stream code into core/fxcrt and renames to CFX_SeekableStreamProxy. Change-Id: I6641fe0cca45a128ef3ec281b0b40f8d60296387 Reviewed-on: https://pdfium-review.googlesource.com/4311 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-04-18Remove hand-written bsearch from XFA_GetAttributeEnumByName()Tom Sepez
Change-Id: Ic4bf34dfbdd06971d8935d031bdb7996c78d262f Reviewed-on: https://pdfium-review.googlesource.com/4315 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-18Remove hand-written bsearch from XFA_GetAttributeByName()Tom Sepez
Also fix potential for collisions by checking exact name. Change-Id: I48cd609d28a23f738f7a6c946820a688a4163024 Reviewed-on: https://pdfium-review.googlesource.com/4314 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-04-18Libtiff upstream security fixesNicolas Pena
Upstream patches applied: https://github.com/vadz/libtiff/commit/47f2fb61a3a64667bce1a8398a8fcb1b348ff122 https://github.com/vadz/libtiff/commit/0abd094b6e5079c4d8be733829240491cb230f3d https://github.com/vadz/libtiff/commit/3144e57770c1e4d26520d8abee750f8ac8b75490 https://github.com/vadz/libtiff/commit/3cfd62d77c2a7e147a05bd678524c345fa9c2bb8 https://github.com/vadz/libtiff/commit/0a76a8c765c7b8327c59646284fa78c3c27e5490 https://github.com/vadz/libtiff/commit/66e7bd59520996740e4df5495a830b42fae48bc4 Bug: chromium:711638 Change-Id: I017bfa91f7682c190bd7f8dbe36c2c3d1ac68728 Reviewed-on: https://pdfium-review.googlesource.com/4313 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-04-18Rename IFGAS_Stream to CFGAS_StreamDan Sinclair
This CL replaces IFGAS_Stream with the only implementation CFGAS_Stream. The CreateReadStream and CreateWriteStream methods are removed in favour of calling MakeRetain directly. Change-Id: I882a89258f642e24fc3d631587db05652bd53ded Reviewed-on: https://pdfium-review.googlesource.com/4210 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-04-18Remove IFGAS_Stream::CreateWideStringReadStreamDan Sinclair
This Cl removes the wide string read stream and passes through a memory stream as needed. The callers were updated to pass the correct types. Change-Id: I8e2660859a85e38ed1c3f4c596ef7c8242762084 Reviewed-on: https://pdfium-review.googlesource.com/4172 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-04-18Libtiff upstream: _TIFFcalloc additionNicolas Pena
Upstream commit: https://github.com/vadz/libtiff/commit/d60332057b9575ada4f264489582b13e30137be1 Bug: chromium:711638 Change-Id: I46de1a00f9bb8d5de8df64ec78a9d62dcb4352ed Reviewed-on: https://pdfium-review.googlesource.com/4310 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-04-18Clean up unneeded code in agg and skia driverNicolas Pena
- The agg driver never initializes an ICC transform and always uses an alpha_flag equal to 0 in a couple of methods. - The skia driver is not using CFX_Renderer. If it needs it later, we should move it out of fx_agg_driver.cpp into its own file, instead of duplicating the code. Change-Id: Ibd721cf1760270bea3f8f95d6e1e8edbc6ba1792 Reviewed-on: https://pdfium-review.googlesource.com/3952 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Cary Clark <caryclark@google.com> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-04-18Fold the CFGAS_Stream subclasses in CFGAS_StreamDan Sinclair
This CL moves ReadData and WriteData into CFGAS_Stream and predicates their usage on m_isWriteStream. This then removes the two subclasses of CFGAS_Stream and just passes the correct flag through the constructor. Change-Id: I72ea88f333c8bdaf5b323b2832479231cfd2c0b8 Reviewed-on: https://pdfium-review.googlesource.com/4154 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
2017-04-18Codepage code into anonymouse namespaceDan Sinclair
This CL moves the FX_GetCodePageFromCharset method into cfgas_fontmgr anonymouse namespace. Change-Id: I1232341b8639328035f12aebfb7a65a4fc0ba08f Reviewed-on: https://pdfium-review.googlesource.com/4291 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-04-18Subclass the stream implementations from CFGAS_StreamDan Sinclair
Rename CFGAS_TextStream to CFGAS_Stream. CFGAS_Stream is converted to a base class instead of accepting an IFGAS_StreamImp. Things which inherted from IFGAS_StreamImp now inherit from CFGAS_Stream. The stream type inputs are changed to IFX_SeekableStream so that they can accept the same type (IFX_SeekableStream is an IFX_SeekableWriteStream and an IFX_SeekableReadStream). This way the storage can be shared in the base class. Change-Id: I06645071e68e2a4d4120c0e336529f2c18c2b705 Reviewed-on: https://pdfium-review.googlesource.com/4152 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>