Remove unused shell_app_window_api.h/cc

Remove unused shell_app_window_api.h/cc

This was replaced by the stub in apps/shell/browser/api/shell/ and the
chrome.shell.createWindow implementation.

BUG=none
TEST=compiles

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=271314

[James Cook, 2014-05-16 21:12:31]

rockot, PTAL.  Please CQ if looks good.

[Ken Rockot(use gerrit already), 2014-05-16 21:14:55]

lgtm

[Ken Rockot(use gerrit already), 2014-05-16 21:14:58]

The CQ bit was checked by rockot@chromium.org

[commit-bot: I haz the power, 2014-05-16 21:15:34]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jamescook@chromium.org/284393002/1

[commit-bot: I haz the power, 2014-05-17 06:45:13]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-05-17 07:32:29]

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

[commit-bot: I haz the power, 2014-05-17 07:32:29]

Try jobs failed on following builders:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[Ken Rockot(use gerrit already), 2014-05-17 16:06:32]

The CQ bit was checked by rockot@chromium.org

[commit-bot: I haz the power, 2014-05-17 16:06:58]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jamescook@chromium.org/284393002/1

[commit-bot: I haz the power, 2014-05-17 20:09:16]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[commit-bot: I haz the power, 2014-05-17 21:22:42]

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

[commit-bot: I haz the power, 2014-05-17 21:22:42]

Try jobs failed on following builders:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[James Cook, 2014-05-18 18:46:19]

The CQ bit was checked by jamescook@chromium.org

[commit-bot: I haz the power, 2014-05-18 18:46:24]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jamescook@chromium.org/284393002/1

[commit-bot: I haz the power, 2014-05-18 19:37:02]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[commit-bot: I haz the power, 2014-05-18 21:01:26]

Change committed as 271314