Add support for shared memory when retrieving the backing store as a SkBitmap. In my testing, this speeds it up 2-3x.
Add support for shared memory when retrieving the backing store as a SkBitmap.
In my testing, this speeds it up 2-3x.

Review URL: http://codereview.chromium.org/150032

git-svn-id: http://src.chromium.org/svn/trunk/src@19633 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: abb3c139ab04aef0c375fa6eee528431ddbbc855
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