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, 17 insertions, 0 deletions

diff --git a/third_party/lcms/0024-verify-size-before-reading.patch b/third_party/lcms/0024-verify-size-before-reading.patch
new file mode 100644
index 0000000000..e72e310a1b
--- /dev/null
+++ b/third_party/lcms/0024-verify-size-before-reading.patch
@@ -0,0 +1,17 @@
+diff --git a/third_party/lcms/src/cmstypes.c b/third_party/lcms/src/cmstypes.c
+index 75f1fae32..4d96a1ed6 100644
+--- a/third_party/lcms/src/cmstypes.c
++++ b/third_party/lcms/src/cmstypes.c
+@@ -173,6 +173,12 @@ cmsBool ReadPositionTable(struct _cms_typehandler_struct* self,
+ {
+     cmsUInt32Number i;
+     cmsUInt32Number *ElementOffsets = NULL, *ElementSizes = NULL;
++    cmsUInt32Number currentPosition;
++
++    currentPosition = io->Tell(io);
++    // Verify there is enough space left to read two cmsUInt32Number items for Count items.
++    if (((io->ReportedSize - currentPosition) / (2 * sizeof(cmsUInt32Number))) < Count)
++        return FALSE;
+ 
+     // Let's take the offsets to each element
+     ElementOffsets = (cmsUInt32Number *) _cmsCalloc(io ->ContextID, Count, sizeof(cmsUInt32Number));