LCMS: upgrade to 2.8

This CL upgrades LCMS from version 2.6 to 2.8. All changes from LCMS
original version 2.8 are stored in patch files:
- Patch 0: memory management modifications to use PDFium methods. This
was previously not in any patch, so the changes were manually applied.
- Patches 1-5: new patch files corresponding to old changes that can be
seen in the history, but did not previously have patch files.
- Patches 6-25: previous patches (patch numbers shifted by 6). The one
for from16-to-8-overflow.patch was deleted as it was already upstream.
Some patches did not apply cleanly so their .patch files were modified.
- Patch 26: as I just moved files directly, unsupported characters were
moved in unchanged, so I had to fix all of them: e with tilde and
other characters were replaced to allow compilation on Windows.
- Patch 27: Went over the code and re-applied changes that included
comments clearly indicating this was Foxit. These changes are all
already seen in the initial PDFium commit.

Change-Id: Ic1d84e54803ef9e6b280ef7619bbf0b757312fbf
Reviewed-on: https://pdfium-review.googlesource.com/10590
Commit-Queue: Nicolás Peña <npm@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/third_party/lcms/0002-old-performance-fix.patch b/third_party/lcms/0002-old-performance-fix.patch
new file mode 100644
index 0000000000..cea2bee94b
--- /dev/null
+++ b/third_party/lcms/0002-old-performance-fix.patch
@@ -0,0 +1,13 @@
+diff --git a/third_party/lcms/src/cmsgamma.c b/third_party/lcms/src/cmsgamma.c
+index edb8f6bba..eb3dd881c 100644
+--- a/third_party/lcms/src/cmsgamma.c
++++ b/third_party/lcms/src/cmsgamma.c
+@@ -799,7 +799,7 @@ void CMSEXPORT cmsFreeToneCurveTriple(cmsToneCurve* Curve[3])
+ // Duplicate a gamma table
+ cmsToneCurve* CMSEXPORT cmsDupToneCurve(const cmsToneCurve* In)
+ {
+-    if (In == NULL) return NULL;
++    if (In == NULL || In ->Segments == NULL || In ->Table16 == NULL) return NULL;
+ 
+     return  AllocateToneCurveStruct(In ->InterpParams ->ContextID, In ->nEntries, In ->nSegments, In ->Segments, In ->Table16);
+ }