Fix ChromeRenderWidgetHostViewMacHistorySwiperTest.TestMostlyHorizontal

Fix ChromeRenderWidgetHostViewMacHistorySwiperTest.TestMostlyHorizontal

Change the PhaseBegan to not cause a vertical scroll.

Deltas for PhaseBegan events are incorrectly
ignored by ScrollElasticityController. The PhaseBegan deltas are not
ignored by impl-side scrolling, which causes the test to fail. If
ScrollElasticityController is corrected to not ignore PhaseBegan deltas,
the test fails as well.

By changing the delta for PhaseBegan, the test passes both with
impl-side scrolling and with the corrected ScrollElasticityController.

BUG=133097
Committed: https://crrev.com/5fa865cf531895e944c6499068ec00b62576f180
Cr-Commit-Position: refs/heads/master@{#310148}

[ccameron, 2015-01-02 22:15:24]

ccameron@chromium.org changed reviewers:
+ erikchen@chromium.org

[ccameron, 2015-01-02 22:15:52]

Small fix (last Chromium test failing with impl event handling).

[erikchen, 2015-01-05 18:54:11]

lgtm

[ccameron, 2015-01-05 18:56:28]

ccameron@chromium.org changed reviewers:
+ avi@chromium.org

[ccameron, 2015-01-05 18:56:29]

Adding avi for OWNER stamp.

[Avi (use Gerrit), 2015-01-05 19:50:31]

lgtm

stampity stamp

[ccameron, 2015-01-05 20:14:15]

Thanks!

[ccameron, 2015-01-05 20:14:19]

The CQ bit was checked by ccameron@chromium.org

[commit-bot: I haz the power, 2015-01-05 20:15:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/811383003/1

[commit-bot: I haz the power, 2015-01-05 20:22:22]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-01-05 20:22:22]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[ccameron, 2015-01-06 19:14:16]

ccameron@chromium.org changed reviewers:
+ sky@chromium.org

[ccameron, 2015-01-06 19:14:17]

sky, can you stamp this?

On 2015/01/05 20:22:22, I haz the power (commit-bot) wrote:
> Try jobs failed on following builders:
>   chromium_presubmit on tryserver.chromium.linux
>
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

Huh -- that's odd, in chrome/browser/OWNERS, we have avi listed as owning *.mm,
but presubmit doesn't like that.

[sky, 2015-01-06 21:07:16]

LGTM

[ccameron, 2015-01-06 21:11:34]

Thanks!

[ccameron, 2015-01-06 21:14:46]

The CQ bit was checked by ccameron@chromium.org

[commit-bot: I haz the power, 2015-01-06 21:15:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/811383003/1

[commit-bot: I haz the power, 2015-01-06 21:20:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-06 21:22:13]

Patchset 1 (id:??) landed as
https://crrev.com/5fa865cf531895e944c6499068ec00b62576f180
Cr-Commit-Position: refs/heads/master@{#310148}