Implement the Instant extended API startMargin, endMargin, and rtl properties and the onmarginchange event for Views only.


BUG=153403


Review URL: https://chromiumcodereview.appspot.com/11359198

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@173028 0039d316-1c4b-4281-b951-d872f2087c98
23 files changed