Disable Pepper 3d contexts when accelerated compositing of plugins is disabled
Disable Pepper 3d contexts when accelerated compositing of plugins is disabled

BUG=none
TEST=Pepper Flash

Review URL: http://codereview.chromium.org/6127007

git-svn-id: http://src.chromium.org/svn/trunk/src@71273 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 9e03732818bfe4bebbe05f1a6f70ed38ec868322
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser