tree d2d627f76748c006af4214618d2ceebe9326f586
parent 7404c0991d4389c8415cf11a6e682b17f3bce70b
author jei.mayol <jei.mayol@gmail.com> 1423114283 -0800
committer Commit bot <commit-bot@chromium.org> 1423114283 -0800

Fix GIF transparency.

The GIF decoder, in the onDecode() function, tries to obtain the
transparency info from the temporary SavedImage object, temp_save,
but the decoder had been changed to save extension block data to
the GifFileType object instead. As a result, find_transpIndex() can't
find the correct transaprency index and returns -1.

This had been reported in Android 4.4. AOSP pulled skia changes
related to giflib 5.x changes after Android 4.3, which is why
the problem is not reproducible in versions before KitKat.

AOSP Issue 62016:
https://code.google.com/p/android/issues/detail?id=62016

BUG=skia:

Review URL: https://codereview.chromium.org/429053004