commit 41596bf935a7e28617a668f90f53590e357bc50a
author rbyers <rbyers@chromium.org> Fri Dec 04 22:39:16 2015
committer Commit bot <commit-bot@chromium.org> Fri Dec 04 23:07:34 2015
tree 9d0c1067459c4d8b7e93ca4390e912dff89d55d1
parent c027914abee85b34b8223ced83c42200ec894d1f

Don't reset touch-action zoom state at scrollers

This ensures that when a page disables double-tap zoom (eg. via
touch-action: manipulation) and hence the click delay, it stays
disabled even when tapping inside a scroller or iframe.

See https://github.com/w3c/pointerevents/issues/19 for details.

Also removes 'toCoreFrame' declaration which has no implementation
anywhere.  I needed this from my test but discovered the common
pattern was to just invoke the toImplBase method directly.

BUG=529295

Review URL: https://codereview.chromium.org/1498923004

Cr-Commit-Position: refs/heads/master@{#363310}