aura: Draw drop shadows under browsers and menus.

ui/aura_shell/aura_shell.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 31 matching lines @@
         'desktop_background_view.cc',
         'desktop_background_view.h',
         'desktop_event_filter.cc',
         'desktop_event_filter.h',
         'desktop_layout_manager.cc',
         'desktop_layout_manager.h',
         'drag_drop_controller.cc',
         'drag_drop_controller.h',
         'drag_image_view.cc',
         'drag_image_view.h',
+        'image_grid.cc',
+        'image_grid.h',
         'launcher/app_launcher_button.cc',
         'launcher/app_launcher_button.h',
         'launcher/launcher.cc',
         'launcher/launcher.h',
         'launcher/launcher_model.cc',
         'launcher/launcher_model.h',
         'launcher/launcher_model_observer.h',
         'launcher/launcher_types.h',
         'launcher/launcher_view.cc',
         'launcher/launcher_view.h',
         'launcher/tabbed_launcher_button.cc',
         'launcher/tabbed_launcher_button.h',
         'launcher/view_model.cc',
         'launcher/view_model.h',
         'launcher/view_model_utils.cc',
         'launcher/view_model_utils.h',
         'modal_container_layout_manager.cc',
         'modal_container_layout_manager.h',
         'modality_event_filter.cc',
         'modality_event_filter.h',
         'modality_event_filter_delegate.h',
         'property_util.cc',
         'property_util.h',
+        'shadow.cc',
+        'shadow.h',
+        'shadow_controller.cc',
+        'shadow_controller.h',
         'shelf_layout_controller.cc',
         'shelf_layout_controller.h',
         'shell.cc',
         'shell.h',
         'shell_delegate.h',
         'shell_factory.h',
         'shell_window_ids.h',
         'show_state_controller.h',
         'show_state_controller.cc',
         'stacking_controller.cc',
@@ skipping 37 matching lines @@
         '../ui.gyp:ui_resources',
         '../ui.gyp:ui_resources_standard',
         '../aura/aura.gyp:aura',
         '../aura/aura.gyp:test_support_aura',
         'aura_shell',
       ],
       'sources': [
         'default_container_layout_manager_unittest.cc',
         'desktop_event_filter_unittest.cc',
         'drag_drop_controller_unittest.cc',
+        'image_grid_unittest.cc',
         'launcher/launcher_model_unittest.cc',
         'launcher/view_model_unittest.cc',
         'launcher/view_model_utils_unittest.cc',
         'modal_container_layout_manager_unittest.cc',
         'run_all_unittests.cc',
+        'shadow_controller_unittest.cc',
         'shell_unittest.cc',
         'stacking_controller_unittest.cc',
         'test_suite.cc',
         'test_suite.h',
         'test/aura_shell_test_base.cc',
         'test/aura_shell_test_base.h',
         'toplevel_layout_manager_unittest.cc',
         'toplevel_window_event_filter_unittest.cc',
         'workspace_controller_unittest.cc',
         'workspace/workspace_manager_unittest.cc',
@@ skipping 33 matching lines @@
         'examples/widgets.cc',
         'examples/window_type_launcher.cc',
         'examples/window_type_launcher.h',
         '<(SHARED_INTERMEDIATE_DIR)/ui/gfx/gfx_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/ui_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources_standard/ui_resources_standard.rc',
       ],
     },
   ],
 }