Remove unused class ShellAppWindowController

Remove unused class ShellAppWindowController

BUG=None

Committed: https://crrev.com/b73e07836a96661fdf6d599d0f73f4486c603dcb
Cr-Commit-Position: refs/heads/master@{#293920}

[hashimoto, 2014-09-08 09:47:58]

hashimoto@chromium.org changed reviewers:
+ jamescook@chromium.org, oshima@chromium.org

[James Cook, 2014-09-08 17:47:22]

lgtm

[oshima, 2014-09-08 17:49:50]

lgtm

[hashimoto, 2014-09-09 00:05:06]

The CQ bit was checked by hashimoto@chromium.org

[commit-bot: I haz the power, 2014-09-09 00:28:39]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/hashimoto@chromium.org/554623002/1

[commit-bot: I haz the power, 2014-09-09 06:35:14]

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

[commit-bot: I haz the power, 2014-09-09 06:35:15]

Try jobs failed on following builders:
  android_arm64_dbg_recipe on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_arm64_d...)
  android_clang_dbg_recipe on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_clang_d...)
  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...)

[hashimoto, 2014-09-09 10:04:35]

The CQ bit was checked by hashimoto@chromium.org

[commit-bot: I haz the power, 2014-09-09 10:04:45]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/hashimoto@chromium.org/554623002/20001

[commit-bot: I haz the power, 2014-09-09 11:17:40]

Committed patchset #2 (id:20001) as be05c742ecbb6bf0e85fc1676256215552076c36

[commit-bot: I haz the power, 2014-09-10 03:52:48]

Patchset 2 (id:??) landed as
https://crrev.com/b73e07836a96661fdf6d599d0f73f4486c603dcb
Cr-Commit-Position: refs/heads/master@{#293920}