Clear Grab everytime before tring to grab input  It's not clear why it's failing to grab the input.  This could be because someone is stealing the grab at the same time and I lost.  This CL changes TryGrabAllIput so that next time it will succeeds.
Clear Grab everytime before tring to grab input
 It's not clear why it's failing to grab the input.
 This could be because someone is stealing the grab at the same time and I lost.
 This CL changes TryGrabAllIput so that next time it will succeeds.

BUG=chromium-os:5902
TEST=none

Review URL: http://codereview.chromium.org/3134040

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@57590 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser