Fixes painting issue with bookmarks bar
Fixes painting issue with bookmarks bar

When the bookmarks bar was showing, opening a dialog which paints on top of the bookmark bar in touch_ui
and dismissing it would leave ghosts where the dialog used to be.
The reason is that the root view has a layer. It would paint the entire view tree into the root view including content which is contained by child layers

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/8046019

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@103111 0039d316-1c4b-4281-b951-d872f2087c98

gavinp/chromium,adobe/chromium,ropik/chromium,ropik/chromium,yitian134/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,yitian134/chromium,gavinp/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,gavinp/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,ropik/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,yitian134/chromium,gavinp/chromium,ropik/chromium,adobe/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,adobe/chromium