Reapply "Add a switch to enable composited scrolling for frames and enable it on Android"

Verified that crbug.com/169028 is not caused by this change. Reapply it.

This reverts commit 9acaad1441f150c9ef8206c28a3c2bfda13634f5 which reverted 4c3f35e33ee2656ae567b9aef3df03a653f57d35.

TBR=darin
BUG=165783,169028

Review URL: https://codereview.chromium.org/11818039

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175917 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed