Correctly mark all mouse events derived from touch with FromTouch

Correctly mark all mouse events derived from touch with FromTouch

Bug 401177 added more explicit tracking of the source of synthetic mouse
events.  This CL updates the remianing places that generate mouse event
from touch input to explicitly mark them as so.  To do this I've removed
an ASSERT I added that attempted to lock-in hit-test reduction
improvements.  We have a dedicated test for this (hit-test-counts.html)
and so the ASSERT wasn't adding much.  It's not worth the effort at this
point to refactor the touch drag and drop code (a little used feature)
to remove a couple of hit tests (but I've left the comments in place
saying that ideally we'd do so in the future).

BUG=408660
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181780

[Rick Byers, 2014-09-10 14:35:38]

rbyers@chromium.org changed reviewers:
+ aelias@chromium.org

[Rick Byers, 2014-09-10 14:35:39]

Alex, PTAL at this tiny patch.

It should not have any behavioral impact, so this is just a little cleanup to
avoid confusion in the future.  Note that I hope to expose this "from touch" bit
to the web in the future - see http://crbug.com/115475

[aelias_OOO_until_Jul13, 2014-09-10 16:06:49]

lgtm, but I don't have Source/core/ OWNERS.

[Rick Byers, 2014-09-11 01:27:41]

On 2014/09/10 16:06:49, aelias wrote:
> lgtm, but I don't have Source/core/ OWNERS.

No worries, I do :-)

[Rick Byers, 2014-09-11 01:27:47]

The CQ bit was checked by rbyers@chromium.org

[commit-bot: I haz the power, 2014-09-11 01:28:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/558753002/1

[commit-bot: I haz the power, 2014-09-11 01:32:37]

Committed patchset #1 (id:1) as 181780