Roll ANGLE 551:561 to pick up recent bug fixes.
Roll ANGLE 551:561 to pick up recent bug fixes.

TEST=none (built by hand, ran WebGL demos)
BUG=none

Review URL: http://codereview.chromium.org/6523041

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@75045 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser