Disable run-time flag for device orientation in test_shell
Disable run-time flag for device orientation in test_shell

Device orientation runtime flag must be switched off in test_shell,
as it doesn't provide a DeviceOrientationClient to the Page constructor.
WebKit r64270 triggered the problem by using this NULL client
in the DeviceOrientationController constructor, causing it to crash.
The DeviceOrientationController does not get instantiated when the runtime flag is off.

BUG=None
TEST=test_shell should not crash

Review URL: http://codereview.chromium.org/3066015

git-svn-id: http://src.chromium.org/svn/trunk/src@54125 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1a8d279e846663acb319392b304a5c471fa6f09b
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser