commit 9c798207b7c710148d7f2989e877a7ece62edd5e
author zoran.jovanovic <zoran.jovanovic@sonymobile.com> Thu Apr 16 11:03:16 2015 -0700
committer Commit bot <commit-bot@chromium.org> Thu Apr 16 11:03:16 2015 -0700
tree 3249a85b0a6287b0f36f8cd788104517f9f436ed
parent 72badbd99e2321bfbcb22f78218bbafa71af4698

SkScaledBitmapSampler: fix memory overwritten

Memory will be overwritten while downsampling some
interlaced gif images, most commonly with odd sizes,
when index of destination row stores in the current
line computed from GifInterlaceIter meets:

 X is an integer in [0..height-1]
   and
 (X < height)
 && ((X - sampleSize/2) % sampleSize == 0)
 && ((X - sampleSize/2)/sampleSize >= height/sampleSize)

Signed-off-by: Lu Tong <lu.x.tong@sonymobile.com>

BUG=skia:

Review URL: https://codereview.chromium.org/1085253002