Follow up to serialization validation code

1 ) Added check for bool to make sure is it either 0 or 1 and not garbage

2 ) Added more solid kernel size checks in SkMatrixConvolutionImageFilter

3 ) Make sure array size is validated in SkMergeImageFilter

BUG=
R=reed@google.com, mtklein@google.com, senorblanco@google.com, senorblanco@chromium.org

Author: sugoi@chromium.org

Review URL: https://codereview.chromium.org/23548034

git-svn-id: http://skia.googlecode.com/svn/trunk/src@11925 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed