aura: Use the existing notification system.

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'dependencies': [
@@ skipping 4784 matching lines @@
                 ['include', '^browser/ui/views/location_bar/location_icon_view.cc'],
                 ['include', '^browser/ui/views/location_bar/location_icon_view.h'],
                 ['include', '^browser/ui/views/location_bar/page_action_image_view.cc'],
                 ['include', '^browser/ui/views/location_bar/page_action_image_view.h'],
                 ['include', '^browser/ui/views/location_bar/page_action_with_badge_view.cc'],
                 ['include', '^browser/ui/views/location_bar/page_action_with_badge_view.h'],
                 ['include', '^browser/ui/views/location_bar/selected_keyword_view.cc'],
                 ['include', '^browser/ui/views/location_bar/selected_keyword_view.h'],
                 ['include', '^browser/ui/views/location_bar/star_view.cc'],
                 ['include', '^browser/ui/views/location_bar/star_view.h'],
+                ['include', '^browser/ui/views/notifications/balloon_view.cc'],
+                ['include', '^browser/ui/views/notifications/balloon_view.h'],
                 ['include', '^browser/ui/views/notifications/balloon_view_host.cc'],
                 ['include', '^browser/ui/views/notifications/balloon_view_host.h'],
                 ['include', '^browser/ui/views/omnibox/omnibox_view_views.cc'],
                 ['include', '^browser/ui/views/omnibox/omnibox_view_views.h'],
                 ['include', '^browser/ui/views/page_info_bubble_view.cc'],
                 ['include', '^browser/ui/views/pinned_contents_info_bubble.cc'],
                 ['include', '^browser/ui/views/pinned_contents_info_bubble.h'],
                 ['include', '^browser/ui/views/profile_tag_view.cc'],
                 ['include', '^browser/ui/views/profile_tag_view.h'],
                 ['include', '^browser/ui/views/reload_button.cc'],
@@ skipping 195 matching lines @@
                 ['exclude', '^browser/ui/gtk/constrained_window_gtk.h'],
                 ['exclude', '^browser/ui/gtk/repost_form_warning_gtk.cc'],
                 ['exclude', '^browser/ui/gtk/repost_form_warning_gtk.h'],
                 ['exclude', '^browser/ui/gtk/ssl_client_certificate_selector.cc'],
                 ['exclude', '^browser/ui/views/constrained_html_delegate_gtk.cc'],
                 ['exclude', '^browser/ui/views/frame/browser_non_client_frame_view_factory_x11.cc'],
                 ['exclude', '^browser/ui/views/tabs/tab_strip_factory.cc'],
                 ['exclude', '^browser/ui/views/tab_contents/native_tab_contents_view_gtk.*'],
               ],
             }],
+            # chromeos notifications are not used in aura.
+            ['chromeos==1 and use_aura==0', {
+              'sources/': [
+                ['exclude', '^browser/notifications/balloon_collection_impl.cc'],
+                ['exclude', '^browser/notifications/balloon_collection_impl.h'],
+                ['exclude', '^browser/notifications/balloon_collection_views.cc'],
+              ],
+            }],
             ['chromeos==1',{
               'sources/': [
                 ['include', '^browser/ui/gtk/omnibox/omnibox_view_gtk.cc'],
                 ['include', '^browser/ui/gtk/omnibox/omnibox_view_gtk.h'],
                 ['include', '^browser/ui/gtk/simple_message_box_gtk.cc'],
                 ['include', '^browser/ui/views/omnibox/omnibox_view_views.cc'],
                 ['include', '^browser/ui/views/omnibox/omnibox_view_views.h'],
                 ['exclude', '^browser/download/download_shelf.h'],
                 ['exclude', '^browser/download/download_shelf_context_menu.cc'],
                 ['exclude', '^browser/download/download_shelf_context_menu.h'],
                 ['exclude', '^browser/extensions/extension_tts_api_linux.cc'],
-                ['exclude', '^browser/notifications/balloon_collection_impl.cc'],
-                ['exclude', '^browser/notifications/balloon_collection_impl.h'],
                 ['exclude', '^browser/notifications/balloon_collection_gtk.cc'],
-                ['exclude', '^browser/notifications/balloon_collection_views.cc'],
                 ['exclude', '^browser/ui/views/download/download_item_view.cc'],
                 ['exclude', '^browser/ui/views/download/download_item_view.h'],
                 ['exclude', '^browser/ui/views/download/download_shelf_context_menu_view.cc'],
                 ['exclude', '^browser/ui/views/download/download_shelf_context_menu_view.h'],
                 ['exclude', '^browser/ui/views/download/download_shelf_view.cc'],
                 ['exclude', '^browser/ui/views/download/download_shelf_view.h'],
               ],
               'dependencies': [
                 '../dbus/dbus.gyp:dbus',
                 '../third_party/protobuf/protobuf.gyp:protobuf_lite',
@@ skipping 189 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/history/in_memory_url_index_cache.proto' ],
       'variables': {
         'proto_in_dir': 'browser/history',
         'proto_out_dir': 'chrome/browser/history',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }