Two tiny comment/style fixes to RenderFrameHostFactory.

BUG=304341
TEST=None

Review URL: https://codereview.chromium.org/77243008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236633 0039d316-1c4b-4281-b951-d872f2087c98
Scroll begin and scroll end gestures ignore their ack dispositions.

BUG=302852
TEST=ImmediateInputRouterTest.GestureTypesIgnoringAck

Review URL: https://codereview.chromium.org/78903004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236634 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236634
Fix multiline text offset calculation

This was broken since r232374.

BUG=320850

Review URL: https://codereview.chromium.org/75233003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236635 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236635