Move AppWindow related classes to extensions

Move AppWindow related classes to extensions

Move AppDelegate, AppWebContentsHelper and AppWindowGeometryCache to extensions/browser/app_window
Change the namespace from apps to extensions.

BUG=403726
R=benwells@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=290796

[hashimoto, 2014-08-20 03:50:53]

Seems web_contents_sizer cannot be placed under extensions because Android needs
it.
Reverted web_contents_sizer related changes.

[benwells, 2014-08-20 05:32:14]

lgtm

[hashimoto, 2014-08-20 06:35:39]

The CQ bit was checked by hashimoto@chromium.org

[commit-bot: I haz the power, 2014-08-20 06:35:57]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/hashimoto@chromium.org/486153002/180001

[commit-bot: I haz the power, 2014-08-20 06:44:59]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_tests_recipe on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_dbg_tes...)
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)
  ios_rel_device_ninja on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)
  win8_chromium_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_rel...)
  win_chromium_compile_dbg on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_comp...)
  win_chromium_rel_swarming on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)
  win_chromium_x64_rel_swarming on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[commit-bot: I haz the power, 2014-08-20 06:46:36]

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

[commit-bot: I haz the power, 2014-08-20 06:46:38]

Try jobs failed on following builders:
  ios_rel_device_ninja on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)

[hashimoto, 2014-08-20 07:23:35]

The CQ bit was checked by hashimoto@chromium.org

[commit-bot: I haz the power, 2014-08-20 07:24:17]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/hashimoto@chromium.org/486153002/10019

[commit-bot: I haz the power, 2014-08-20 09:01:35]

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

[commit-bot: I haz the power, 2014-08-20 09:04:45]

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

[commit-bot: I haz the power, 2014-08-20 09:04:46]

Try jobs failed on following builders:
  win_chromium_rel_swarming on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[hashimoto, 2014-08-20 09:29:35]

The CQ bit was checked by hashimoto@chromium.org

[commit-bot: I haz the power, 2014-08-20 09:31:04]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/hashimoto@chromium.org/486153002/210001

[hashimoto, 2014-08-20 09:40:07]

Committed patchset #5 manually as 290796 (presubmit successful).