mac: Fix a crash in the history swiper for magic mouse momentum events.

The 'trackSwipeWithEvent:' api throws an exception if the event passed in is a
momentum scroll event. We started using momentum scroll events in our logic for
magic trackpads, since we're working directly with hardware touches. We failed
to filter out momentum events when falling back to the 'trackSwipeWithEvent:'
api for magic mouse events.

BUG=331506

Review URL: https://codereview.chromium.org/124313002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243003 0039d316-1c4b-4281-b951-d872f2087c98
Blink roll 164456:164476

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=164457:164476&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/124353003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243004 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243005 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243005