Second attempt at moving the StackingClient to a property on the RootWindow.

ui/aura/aura.gyp

 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 14 matching lines @@
       'sources': [
         'aura_switches.cc',
         'aura_switches.h',
         'client/activation_client.cc',
         'client/activation_client.h',
         'client/activation_delegate.cc',
         'client/activation_delegate.h',
         'client/aura_constants.cc',
         'client/aura_constants.h',
         'client/drag_drop_client.h',
+        'client/stacking_client.cc',
         'client/stacking_client.h',
         'client/tooltip_client.h',
         'client/window_drag_drop_delegate.h',
         'cursor.h',
         'root_window_host.h',
         'root_window_host_linux.cc',
         'root_window_host_win.cc',
         'root_window_host_win.h',
         'root_window.cc',
         'root_window.h',
@@ skipping 27 matching lines @@
       ],
       'sources': [
         'test/aura_test_base.cc',
         'test/aura_test_base.h',
         'test/event_generator.cc',
         'test/event_generator.h',
         'test/test_activation_client.cc',
         'test/test_activation_client.h',
         'test/test_event_filter.cc',
         'test/test_event_filter.h',
-        'test/test_stacking_client.cc',
-        'test/test_stacking_client.h',
         'test/test_windows.cc',
         'test/test_windows.h',
         'test/test_window_delegate.cc',
         'test/test_window_delegate.h',
       ],
       'conditions': [
         ['use_webkit_compositor==0', {
           'dependencies': [
             '../gfx/compositor/compositor.gyp:test_compositor',
           ],
@@ skipping 67 matching lines @@
           ],
         }, { # use_webkit_compositor!=1
           'dependencies': [
             '../gfx/compositor/compositor.gyp:test_compositor',
           ],
         }],
       ],
     },
   ],
 }