Roll skia r690:r699.

r692 fixes a valgrind error. r691 brings in optional gradient dithering code for 32bit pixels. Disable this in chrome for now.

BUG=41756,69531,69452
TEST=none
TBR=reed

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71607 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed