Fix paint glitch on load/unload browser action.
Fix paint glitch on load/unload browser action.

This asks the toolbar (BrowserActionContainer.GetParent()) to paint when a browser action view has been added & removed.

TEST=Load browser action. Go to chrome://extensions, click "reload". The omnibar should visibly flash large & small as the browser action is loaded and unload, but it should not leave behind any visible "cruft" around the browser action.

BUG=24642

Review URL: http://codereview.chromium.org/341015

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@30310 0039d316-1c4b-4281-b951-d872f2087c98

Crystalnix/house-of-life-chromium,ropik/chromium,adobe/chromium,gavinp/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium,Crystalnix/house-of-life-chromium,ropik/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,adobe/chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,gavinp/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,gavinp/chromium,Crystalnix/house-of-life-chromium,adobe/chromium,adobe/chromium,ropik/chromium,Crystalnix/house-of-life-chromium,ropik/chromium,Crystalnix/house-of-life-chromium,Crystalnix/house-of-life-chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,yitian134/chromium