Add integration tests for window.orientation.

Add integration tests for window.orientation.

It gives the opportunity to remove the flaky
ScreenOrientationIntegrationTest.java

BUG=None
TBR=jdduke@chromium.org (for some reasons, the presubmit hook doesn't consider that I own that file...)

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=287332

[Michael van Ouwerkerk, 2014-07-31 16:57:45]

lgtm

[mlamouri (slow - plz ping), 2014-08-04 11:28:55]

The CQ bit was checked by mlamouri@chromium.org

[commit-bot: I haz the power, 2014-08-04 11:29:43]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mlamouri@chromium.org/431103002/40001

[mlamouri (slow - plz ping), 2014-08-04 12:20:35]

The CQ bit was unchecked by mlamouri@chromium.org

[mlamouri (slow - plz ping), 2014-08-04 12:20:39]

The CQ bit was checked by mlamouri@chromium.org

[commit-bot: I haz the power, 2014-08-04 12:20:52]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mlamouri@chromium.org/431103002/40001

[commit-bot: I haz the power, 2014-08-04 13:33:57]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  linux_chromium_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[commit-bot: I haz the power, 2014-08-04 14:07:45]

Change committed as 287332