Added check in page click tracker to ensure events passed in are mouse events
Added check in page click tracker to ensure events passed in are mouse events

BUG=61255
TEST=None

Review URL: http://codereview.chromium.org/4120011

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@64510 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