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2018-02-22Add namespaces to duplicated Skia code.Jonathan Feinberg
When pdfium is imported into Google's internal repository, the recently copied Skia decimal formatting code causes only-defined-once violations because many Google internal projects depends on Skia through Google's own copy. This patch puts pdfium's private copy of the needed function into a namespace. Change-Id: Id102b17f6f4652e4a50c4ff75825468fc3d90727 Reviewed-on: https://pdfium-review.googlesource.com/27530 Reviewed-by: Hal Canary <halcanary@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-02-16Fix more fallthroughs before reenabling -Wimplicit-fallthrough.Henrique Nakashima
Change-Id: Ic1d5a250fc00d6767cee7eee1b2d74d5e1caa2bb Reviewed-on: https://pdfium-review.googlesource.com/27050 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-02-16Add ASSERT to check OOB m_CharCodesNicolas Pena
It seems m_CharCodes is in rare cases being corrupted, this CL adds ASSERTS to catch whether the corruption is due to out-of-bounds element access. Bug: 782215 Change-Id: I555ad1ccc2de3c35b2e06496f7216fba770f0759 Reviewed-on: https://pdfium-review.googlesource.com/27030 Commit-Queue: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-02-16Improve performance of writing path floats.Dan Sinclair
This CL copies the SkPDF code to convert floats into strings when writing back to PDF files. Change-Id: I8f8af3924a07aa67f93b9d951af1eef5d2c705db Reviewed-on: https://pdfium-review.googlesource.com/21990 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: Hal Canary <halcanary@chromium.org>
2018-02-10Renable -Wimplicit-fallthrough for PDFium.Nico Weber
Didn't find any bugs, but also doesn't require much boilerplate. Bug: TODO Change-Id: I5f30183c55216f1333c79fcb46476d281720873e Reviewed-on: https://pdfium-review.googlesource.com/26210 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Nico Weber <thakis@chromium.org>
2018-02-09Use CFX_Size in CPDF_Page and fpdf_ppo.cpp.Lei Zhang
Instead of having separate floats for width and height. Also remove some out parameters and just return them instead. Change-Id: I798b1453910c89477d422dcb7c0805b90823bf98 Reviewed-on: https://pdfium-review.googlesource.com/26090 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Shirleen Lou <xlou@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-02-09Get rid of EmbedderTest::RenderPageDeprecated().Lei Zhang
Change-Id: I8c6d813e488b2612a85fb1973382f979728df563 Reviewed-on: https://pdfium-review.googlesource.com/25571 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-02-07Remove some deprecated RenderPage method usage.Lei Zhang
Do some additional checks in test cases where pages were rendered but the resulting bitmap was immediately destroyed. Change-Id: I2f4678140cdc672ab4ced70f748135464447ff59 Reviewed-on: https://pdfium-review.googlesource.com/25510 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-02-07Clean up RenderPage methods in EmbedderTest.Lei Zhang
Add replacement methods that make themselves clear as to what they are rendering, and return unique_ptrs to help prevent leakage. Mark existing methods deprecated. Change-Id: I9055407e614dfbe765428fb32a7da64df3418d1d Reviewed-on: https://pdfium-review.googlesource.com/25470 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-02-05Make EmbedderTest class member style consistent.Lei Zhang
The class started with |foo_bar_| but now has a mixture of |foo_bar_| and |m_FooBar|. Change them all to |foo_bar_|. While making this change, also initialize the members in the header when possible. Change-Id: I202ff5dc5e945175ad4da2f3245724f3493aa8aa Reviewed-on: https://pdfium-review.googlesource.com/25390 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-30Use unsigned for char widthchromium/3335Nicolas Pena
Bug: 806612 Change-Id: I22bd9046dd37a1b596762c46a6b29a323d6e9fa1 Reviewed-on: https://pdfium-review.googlesource.com/24410 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2018-01-30Guard usages of tellp(). It may return -1 in error cases.Henrique Nakashima
Change-Id: I064ddcad8671b9ade2c02142a6c2c2983846e3a9 Reviewed-on: https://pdfium-review.googlesource.com/24650 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-30Revert "Revert "Use UnownedPtr instead of T* in MaybeOwned.""Tom Sepez
This reverts commit 77d8ed02c7e97471ceccee5abbabeb2fdea413c7. Reason for revert: <INSERT REASONING HERE> Original change's description: > Revert "Use UnownedPtr instead of T* in MaybeOwned." > > This reverts commit e563e8352139e4852a955e319023b09f2844aee9. > > Reason for revert: <INSERT REASONING HERE> > > Original change's description: > > Use UnownedPtr instead of T* in MaybeOwned. > > > > Always check the liftime in the unowned case. Doing so unearthed > > the following issues: > > > > Transient lifetime issue in jbig2_image when doing realloc(). > > Stale (but unused) dictionary pointer in CPDF_Image. > > Destruction order in error branch in cpdf_dibsource.cpp > > > > Change-Id: I12b758aafeefedc7abe1e8b21a18db959929e95f > > Reviewed-on: https://pdfium-review.googlesource.com/24552 > > Commit-Queue: Tom Sepez <tsepez@chromium.org> > > Reviewed-by: dsinclair <dsinclair@chromium.org> > > TBR=thestig@chromium.org,tsepez@chromium.org,dsinclair@chromium.org > > Change-Id: I3c56ee6ab502da90e3adb7507dbc8cc92f090140 > No-Presubmit: true > No-Tree-Checks: true > No-Try: true > Reviewed-on: https://pdfium-review.googlesource.com/24670 > Reviewed-by: Tom Sepez <tsepez@chromium.org> > Commit-Queue: Tom Sepez <tsepez@chromium.org> TBR=thestig@chromium.org,tsepez@chromium.org,dsinclair@chromium.org Change-Id: I0ccbbeab8be6cadc9b3a5bfefe2aca733654342f No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://pdfium-review.googlesource.com/24671 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-01-30Revert "Use UnownedPtr instead of T* in MaybeOwned."Tom Sepez
This reverts commit e563e8352139e4852a955e319023b09f2844aee9. Reason for revert: <INSERT REASONING HERE> Original change's description: > Use UnownedPtr instead of T* in MaybeOwned. > > Always check the liftime in the unowned case. Doing so unearthed > the following issues: > > Transient lifetime issue in jbig2_image when doing realloc(). > Stale (but unused) dictionary pointer in CPDF_Image. > Destruction order in error branch in cpdf_dibsource.cpp > > Change-Id: I12b758aafeefedc7abe1e8b21a18db959929e95f > Reviewed-on: https://pdfium-review.googlesource.com/24552 > Commit-Queue: Tom Sepez <tsepez@chromium.org> > Reviewed-by: dsinclair <dsinclair@chromium.org> TBR=thestig@chromium.org,tsepez@chromium.org,dsinclair@chromium.org Change-Id: I3c56ee6ab502da90e3adb7507dbc8cc92f090140 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://pdfium-review.googlesource.com/24670 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-01-30Use UnownedPtr instead of T* in MaybeOwned.Tom Sepez
Always check the liftime in the unowned case. Doing so unearthed the following issues: Transient lifetime issue in jbig2_image when doing realloc(). Stale (but unused) dictionary pointer in CPDF_Image. Destruction order in error branch in cpdf_dibsource.cpp Change-Id: I12b758aafeefedc7abe1e8b21a18db959929e95f Reviewed-on: https://pdfium-review.googlesource.com/24552 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-26Pass nullptr to ParseContentWithParams() instead of 0.Lei Zhang
Change-Id: I4ec48652d41cea9a79b6711c08484965ceea7587 Reviewed-on: https://pdfium-review.googlesource.com/24130 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-26Fix crash in palette loading with Pattern colorspace.Henrique Nakashima
Bug: chromium:804155 Change-Id: Ie70e93116696e3c4db987a10b8fc31b1af8aea70 Reviewed-on: https://pdfium-review.googlesource.com/23990 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-01-26Change CPDF_RenderStatus::ProcessPathPattern() to pass by pointer.Lei Zhang
Avoid passing by non-const ref. Change-Id: I05bfdd918b334d775c5ce50eebb8328630626896 Reviewed-on: https://pdfium-review.googlesource.com/24170 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-01-25Make private some methods in CPDF_DIBSource.Henrique Nakashima
Change-Id: Ieb6a4dab00a784dd8d085100e07c935094d72b08 Reviewed-on: https://pdfium-review.googlesource.com/24011 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-01-24Fix some nits in CPDF_Parser.Lei Zhang
Change-Id: Ib4c6589a63761e8993e8cd33ed9459ba3d1e206c Reviewed-on: https://pdfium-review.googlesource.com/23911 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-18Remove more unneeded includes and code from headers.Lei Zhang
Change-Id: I0a07dbc9850bef2184ed35ff04b08385fc1bdd17 Reviewed-on: https://pdfium-review.googlesource.com/22891 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-17Fix behavior of FPDF_RenderPageBitmapWithMatrixHenrique Nakashima
This functional part of this CL is mostly a revert of "Change behaviour of FPDF_RenderPageBitmapWithMatrix" 24b0733a72bbc4013bff8628f198b0aea807aa06 Besides the revert, the parameters passed to pPage->GetDisplayMatrix() are changed to fix a bug with the previous implementation: the page was scaled to fit inside the clipping_rect, instead of clipped. Bug: pdfium:849 Change-Id: I95d0a303a979c998026a3bd6963c8684a1209f03 Reviewed-on: https://pdfium-review.googlesource.com/22931 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-01-12Move some RetainPtr getters/setters out of headers.Lei Zhang
RetainPtr operations are not trivial. Change-Id: Ic106ada69d1c023a8132a2a59db17d550fd81fa0 Reviewed-on: https://pdfium-review.googlesource.com/22911 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-09Expose marked content IDs for images and alt text.Julian Lunger
- Adds two new public bits of API: - StructElement_GetMCID(STRUCTELEMENT) to return the marked content ID of the struct element. - IMAGEOBJ_METADATA.mcid to contain the marked content ID of the image. - Restores ContentMark::GetMCID, which was removed with other dead code in https://pdfium-review.googlesource.com/c/pdfium/+/19170. - Adds a couple calls to tests, including a simple new PDF to test the struct tree marked content ID. Bug:pdfium:957 Change-Id: I92856e43d741df989e53a575a08258da19a39f22 Reviewed-on: https://pdfium-review.googlesource.com/20632 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-08Encapsulate CPDF_ShadingObject members.Lei Zhang
Change-Id: I9b878c8df4a6208fb1908bad09eb1c699970163f Reviewed-on: https://pdfium-review.googlesource.com/21690 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-08Make SharedCopyOnWrite use RetainablesDan Sinclair
This CL removes the CountedObject from SharedCopyOnWrite and instead converts the items being shared into Retainable subclasses. BUG: chromium:792372 Change-Id: I9570a521f2fc2434013c3ccb103273bdd2440bb8 Reviewed-on: https://pdfium-review.googlesource.com/22010 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-12-22Only set CPDF_ColorSpace component count on successful load.chromium/3310chromium/3309chromium/3308chromium/3307chromium/3306chromium/3305chromium/3304chromium/3303chromium/3302Lei Zhang
Make sure all CPDF_ColorSpace instances consistently call v_Load(). Change-Id: I15c1608c36781a03131884abceff1ecc4a9a1eb1 Reviewed-on: https://pdfium-review.googlesource.com/21911 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-21Clean up CPDF_Color.chromium/3301Lei Zhang
- Add IsPatternInternal(). - Mark some method parameters const. - Explain relationship between member variables. Change-Id: I650e18012341199985a4537e08c787e46cf8fef7 Reviewed-on: https://pdfium-review.googlesource.com/21912 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2017-12-21Fix various nits in color code.Lei Zhang
Change-Id: Idf2af2dd613d0e2bed5ef9bba4f8c50cd5bc1bc5 Reviewed-on: https://pdfium-review.googlesource.com/21851 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2017-12-20Avoid default arguments in EmbedderTest::OpenDocument().chromium/3300Lei Zhang
Default arguments are banned on virtual functions. Remove default arguments and rename OpenDocument() to OpenDocumentWithOptions(). Add wrappers for OpenDocumentWithOptions() to call it with sensible options. Change-Id: I4955d88cf77a7eab1771692ea3d6a18260b52900 Reviewed-on: https://pdfium-review.googlesource.com/21891 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2017-12-20Combine operator< and ByteString::Compare().Lei Zhang
Fix or optimize some ByteString::Compare() callers. Change-Id: I0fde91afc3d17fe160b46d00a441ad05e56377e7 Reviewed-on: https://pdfium-review.googlesource.com/20851 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-19Add parameter validation to CPDF_ShadingPattern.Henrique Nakashima
Check if the ColorSpace and the Function params are valid for the shading type. Bug: chromium:794990 Change-Id: I022e976e5489a6b325d95ad16eab056235a8944d Reviewed-on: https://pdfium-review.googlesource.com/21450 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-12-19Remove some dead code.Lei Zhang
Change-Id: I8edb14c024860c66b5e6c014136393e71e38387d Reviewed-on: https://pdfium-review.googlesource.com/21570 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-19Require valid color space for shading pattern.Henrique Nakashima
Bug: chromium:795889 Change-Id: If29a0f6f7d95bedf014464239da1f8b56e55c9b6 Reviewed-on: https://pdfium-review.googlesource.com/21750 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-12-19Change pattern creation checks in CPDF_DocPageData::GetPattern().Lei Zhang
Do them in the right places, instead of having a catch-all at the end. Change-Id: Ie26f06dbd1c50d5b5bf57aa1f9993d5d19f74c02 Reviewed-on: https://pdfium-review.googlesource.com/21670 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-16Fix null-dereference in CPDF_ShadingPattern::Load().chromium/3298chromium/3297Lei Zhang
BUG=chromium:795490 TBR=hnakashima@chromium.org Change-Id: Ic9f12c1c709c148f7294ab2aaf65fcc695960835 Reviewed-on: https://pdfium-review.googlesource.com/21530 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-15Validate base color space of Indexed color spaces.chromium/3296Henrique Nakashima
Change-Id: I2c1dbf4fe08396130d2fcecd70e175233316579b Reviewed-on: https://pdfium-review.googlesource.com/21430 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2017-12-15Validate shading pattern's ColorSpace. It cannot be a Pattern CS.Henrique Nakashima
Bug: chromium:795251 Change-Id: I6c4fd75a5afd16ced499d031f9b535f8c6828854 Reviewed-on: https://pdfium-review.googlesource.com/21410 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2017-12-14Add restrictions to alternate color spaces.chromium/3295Henrique Nakashima
- ICC color spaces cannot have a Pattern color space as Alternate - Separation and DeviceN color spaces cannot have a special color space as Alternate. Special color spaces are {Separation, DeviceN, Indexed and Pattern}. Bug: chromium:794492 Change-Id: Ia2199382c759d8d1d13c605c22d6495e935265ad Reviewed-on: https://pdfium-review.googlesource.com/21310 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-12-12Use early returns in pdf_parser_decode.cpp.Lei Zhang
Also add a GetUnicodeFromBytes() helper function and use FX_INVALID_OFFSET more often. Change-Id: I3b0954e0cad31a600b0a990360ab370186c792d6 Reviewed-on: https://pdfium-review.googlesource.com/20850 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-11Remove default arguments to CPDF_StreamAcc::LoadAllData().Lei Zhang
Add LoadAllDataFiltered() and LoadAllDataRaw() and update callers. Change-Id: I9b80ee34a358db204968acdc8b1adc9db0b6b83f Reviewed-on: https://pdfium-review.googlesource.com/20810 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2017-12-11Slightly simplify CPDF_StreamAcc::LoadAllData().Lei Zhang
Also initialize members in the header. Change-Id: Ic1cda7f9ef4c69e26604c706678aed24bf4e8ee3 Reviewed-on: https://pdfium-review.googlesource.com/20790 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-11Move some GetDict() calls out of header files.Lei Zhang
Change-Id: I13b297ddb080b478a30a959889941b46feb363b3 Reviewed-on: https://pdfium-review.googlesource.com/20770 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-08Fix build when using different sysroots.chromium/3289Andrew Weintraub
Bug: Change-Id: I86b4c72343288d83d51f493d3d888aad45baed5a Reviewed-on: https://pdfium-review.googlesource.com/20610 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-06Move m_CharCodes to local for crash investigationBruce Dawson
m_CharCodes is getting corrupted and it's difficult to tell why. This moves it to a local variable before it is destroyed so that the corruption - which should be copied over - will be stored in the crash dump. Bug: 782215 Change-Id: Ifd09b21396bf28bca69f2b4082c61cbc4782e209 Reviewed-on: https://pdfium-review.googlesource.com/20530 Commit-Queue: Bruce Dawson <brucedawson@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-12-06Fix nits on some font code.Lei Zhang
Change-Id: I80be0de1a7d9ba502b4468bc13a4595566f8fb30 Reviewed-on: https://pdfium-review.googlesource.com/20432 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-12-05Replace uses of bsearch().chromium/3286Lei Zhang
Either switch to std::lower_bound(), or brute force when the search space is very small. Change-Id: I54db346aeb6f2e8000e95a6a9c8fbdd512df500a Reviewed-on: https://pdfium-review.googlesource.com/20431 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-05Replace bsearch() in FPDFAPI_CIDFromCharCode().Lei Zhang
Use std::lower_bound() instead. Change-Id: I0bed2a90f3aa427a283cd86a050a027ec7a64358 Reviewed-on: https://pdfium-review.googlesource.com/20430 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-12-05Remove redundant field in struct FXCMAP_CMap.Lei Zhang
Change-Id: Ibac6398b5849820562830bb8ed95c3428496f7ef Reviewed-on: https://pdfium-review.googlesource.com/20410 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-04Add text unit to glyph unit conversion to CPDF_Type3Char.Lei Zhang
Use it in type 3 font code. Change-Id: I8b0eb462cc0308f1700d21a62efc929babae8e20 Reviewed-on: https://pdfium-review.googlesource.com/20215 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>