Content Shell: Introduce LayoutTestBrowserContext.

Content Shell: Introduce LayoutTestBrowserContext.

This splits the DRT-specific parts of ShellBrowserContext out into a new
class that we'll only instantiate when the flag is set.

BUG=420994
Committed: https://crrev.com/98ce5ad6bdd2cd058c21f19b997032f3b958cb73
Cr-Commit-Position: refs/heads/master@{#299068}

[Mike West, 2014-10-09 11:48:28]

mkwst@chromium.org changed reviewers:
+ jochen@chromium.org

[Mike West, 2014-10-09 11:48:28]

WDYT?

-mike

[jochen (gone - plz use gerrit), 2014-10-09 13:16:54]

lgtm

[Mike West, 2014-10-09 13:19:36]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-10-09 13:21:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/637843003/1

[commit-bot: I haz the power, 2014-10-09 13:36:23]

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

[commit-bot: I haz the power, 2014-10-09 13:36:26]

Failed to apply patch for content/content_shell.gypi:
While running git apply --index -3 -p1;
  error: patch failed: content/content_shell.gypi:92
  Falling back to three-way merge...
  Applied patch to 'content/content_shell.gypi' with conflicts.
  U content/content_shell.gypi

Patch:       content/content_shell.gypi
Index: content/content_shell.gypi
diff --git a/content/content_shell.gypi b/content/content_shell.gypi
index
33192b03295b8ffa4e2deeb082cb683b6b9944ee..7c7f3d1b3d7427a0d4eaedb7ee29f8e561f5c0cb
100644
--- a/content/content_shell.gypi
+++ b/content/content_shell.gypi
@@ -92,6 +92,8 @@
         'shell/app/webkit_test_platform_support_win.cc',
         'shell/browser/ipc_echo_message_filter.cc',
         'shell/browser/ipc_echo_message_filter.h',
+        'shell/browser/layout_test/layout_test_browser_context.cc',
+        'shell/browser/layout_test/layout_test_browser_context.h',
         'shell/browser/layout_test/layout_test_javascript_dialog_manager.cc',
         'shell/browser/layout_test/layout_test_javascript_dialog_manager.h',
         'shell/browser/notify_done_forwarder.cc',

[commit-bot: I haz the power, 2014-10-09 13:37:15]

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

[Mike West, 2014-10-09 14:17:59]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-10-09 14:19:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/637843003/20001

[commit-bot: I haz the power, 2014-10-09 15:12:54]

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

[commit-bot: I haz the power, 2014-10-09 15:12:56]

Failed to commit the patch.

[commit-bot: I haz the power, 2014-10-09 15:14:24]

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

[Mike West, 2014-10-09 15:27:06]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-10-09 15:28:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/637843003/20001

[commit-bot: I haz the power, 2014-10-09 15:29:34]

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

[commit-bot: I haz the power, 2014-10-09 15:29:35]

Failed to commit the patch.

[commit-bot: I haz the power, 2014-10-09 15:30:25]

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

[Mike West, 2014-10-10 06:50:53]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-10-10 06:51:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/637843003/20001

[commit-bot: I haz the power, 2014-10-10 06:51:53]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2014-10-10 06:52:30]

Patchset 2 (id:??) landed as
https://crrev.com/98ce5ad6bdd2cd058c21f19b997032f3b958cb73
Cr-Commit-Position: refs/heads/master@{#299068}

[apavlov, 2014-10-10 08:23:23]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/641203004/ by apavlov@chromium.org.

The reason for reverting is: Tentatively resulted in multiple layout test
timeouts across the chromium.webkit waterfall..