Pass TouchMajor to HitTestResult

Blink side change to do hit-test that mimics GestureTap:
https://codereview.chromium.org/470833002

Without the touch major information, HitTestResult may not
match how touch events are handled in content view core. As
a result, it is possible that the user touches a link while
the hitTestResult returns unknown type.

BUG=403865

Review URL: https://codereview.chromium.org/475633002

Cr-Commit-Position: refs/heads/master@{#304067}
8 files changed