Begin to move some message handling from NWW onto a framework-agnostic HWND Message handler.

ui/views/views.gyp

 # Copyright (c) 2012 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,
   },
 
   'target_defaults': {
     'conditions': [
@@ skipping 303 matching lines @@
         'widget/child_window_message_processor.cc',
         'widget/child_window_message_processor.h',
         'widget/default_theme_provider.cc',
         'widget/default_theme_provider.h',
         'widget/desktop_native_widget_helper_aura.cc',
         'widget/desktop_native_widget_helper_aura.h',
         'widget/drop_helper.cc',
         'widget/drop_helper.h',
         'widget/drop_target_win.cc',
         'widget/drop_target_win.h',
+        'widget/hwnd_message_handler.cc',
+        'widget/hwnd_message_handler.h',
+        'widget/hwnd_message_handler_delegate.h',
         'widget/root_view.cc',
         'widget/root_view.h',
         'widget/tooltip_manager_aura.cc',
         'widget/tooltip_manager_aura.h',
         'widget/tooltip_manager_win.cc',
         'widget/tooltip_manager_win.h',
         'widget/tooltip_manager.cc',
         'widget/tooltip_manager.h',
         'widget/monitor_win.cc',
         'widget/monitor_win.h',
@@ skipping 103 matching lines @@
           'sources!': [
             'events/event_x.cc',
           ],
         }],
         ['use_aura==0 or OS!="win"', {
           'sources!': [
             'widget/widget_message_filter.cc',
             'widget/widget_message_filter.h',
           ],
         }],
+        ['use_aura==1 or OS!="win"', {
+          'sources!': [
+            'widget/hwnd_message_handler.cc',
+            'widget/hwnd_message_handler.h',
+            'widget/hwnd_message_handler_delegate.h',
+          ],
+        }],
         ['OS!="win"', {
           'sources!': [
+            'widget/hwnd_message_handler.cc',
+            'widget/hwnd_message_handler.h',
+            'widget/hwnd_message_handler_delegate.h',
             'widget/widget_hwnd_utils.cc',
             'widget/widget_hwnd_utils.h',
           ],
         }],
       ],
     }, # target_name: views
     {
       'target_name': 'test_support_views',
       'type': 'static_library',
       'dependencies': [
@@ skipping 267 matching lines @@
           'sources/': [
             # This is needed because the aura rule strips it from the default
             # sources list.
             ['include', '^../../content/app/startup_helper_win.cc'],
           ],
         }],
       ],
     },  # target_name: views_examples_with_content_exe
   ],
 }