Rewrite AcceptTouchEvents test from content_browsertests to browser_tests.

Rewrite AcceptTouchEvents test from content_browsertests to browser_tests.

Ran in trybot to make sure this is not flaky, 200 runs were successful on win and linux trybots.

BUG=368077
Test=None, internal test only change.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=269830

[Fady Samuel, 2014-05-12 10:18:51]

Awesome! Thanks! LGTM

[lazyboy, 2014-05-12 15:41:55]

The CQ bit was checked by lazyboy@chromium.org

[commit-bot: I haz the power, 2014-05-12 15:42:32]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/lazyboy@chromium.org/271593009/80001

[commit-bot: I haz the power, 2014-05-12 17:33:09]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[commit-bot: I haz the power, 2014-05-12 18:03:36]

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

[commit-bot: I haz the power, 2014-05-12 18:03:37]

Try jobs failed on following builders:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[lazyboy, 2014-05-12 18:13:44]

The CQ bit was checked by lazyboy@chromium.org

[commit-bot: I haz the power, 2014-05-12 18:14:48]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/lazyboy@chromium.org/271593009/80001

[commit-bot: I haz the power, 2014-05-12 18:55:14]

Change committed as 269830