Make the ContentGestureProvider a ui::FilteredGestureProvider
Move the ContentGestureProvider to ui/, allowing the filtering and gesture
batching code to be used outside of content/. Also eliminate
TouchDispositionGestureFilter's dependency on a custom ack result type,
instead simply using a bool to indicate whether or not the ack'ed touch was
consumed.
BUG=348588
Review URL: https://codereview.chromium.org/
182383007
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255190 0039d316-1c4b-4281-b951-d872f2087c98