view-manager: Fix some issues regarding running tests in x11.

view-manager: Fix some issues regarding running tests in x11.

During testing, some X11 windows do not get mapped at all (for as yet
not-understood reasons). So the calls to BlockUntilWindowMapped() blocks
indefinitely. So set the override_redirect flag on when creating windows
in tests.

Also:
. Trigger PlatformWindowDelegate::OnAcceleratedWidgetAvailable() after
  mapping the window completes.
. Initialize aura::Env after initializing GL.
. Remove the --use-test-config flag, and instead replace with a combination
  of --use-x11-test-config to set-up X11 for tests (threaded, and turn on
  override_redirect), and the existing
  --override-use-gl-with-osmesa-for-tests.

BUG=523144
Committed: https://crrev.com/f33f4399b40b281758038d237416e3560aca4e0c
Cr-Commit-Position: refs/heads/master@{#346948}

[sadrul, 2015-09-02 15:02:04]

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

[sky, 2015-09-02 15:43:17]

LGTM

https://codereview.chromium.org/1305893006/diff/40001/components/view_manager...
File components/view_manager/public/cpp/lib/args.cc (right):

https://codereview.chromium.org/1305893006/diff/40001/components/view_manager...
components/view_manager/public/cpp/lib/args.cc:12: const char
kUseX11TestConfig[] = "use-x11-test-config";
Document what this does.

[sadrul, 2015-09-02 16:06:28]

https://codereview.chromium.org/1305893006/diff/40001/components/view_manager...
File components/view_manager/public/cpp/lib/args.cc (right):

https://codereview.chromium.org/1305893006/diff/40001/components/view_manager...
components/view_manager/public/cpp/lib/args.cc:12: const char
kUseX11TestConfig[] = "use-x11-test-config";
On 2015/09/02 15:43:17, sky wrote:
> Document what this does.

Done.

[sadrul, 2015-09-02 16:06:40]

The CQ bit was checked by sadrul@chromium.org

[sadrul, 2015-09-02 16:06:40]

The patchset sent to the CQ was uploaded after l-g-t-m from sky@chromium.org
Link to the patchset: https://codereview.chromium.org/1305893006/#ps60001
(title: ".")

[commit-bot: I haz the power, 2015-09-02 16:07:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1305893006/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1305893006/60001

[commit-bot: I haz the power, 2015-09-02 17:12:17]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-09-02 17:13:09]

Patchset 4 (id:??) landed as
https://crrev.com/f33f4399b40b281758038d237416e3560aca4e0c
Cr-Commit-Position: refs/heads/master@{#346948}

[msw, 2015-09-02 20:30:08]

This broke view manager apptests on Android:
http://build.chromium.org/p/chromium.mojo/builders/Chromium%20Mojo%20Android/...