Adds a class that makes it easy to subclass a HWND and filter messages sent to it.

ui/ui_unittests.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'ui_test_support',
       'dependencies': [
         '../base/base.gyp:base',
@@ skipping 94 matching lines @@
       'include_dirs': [
         '../',
       ],
       'conditions': [
         ['OS == "win"', {
           'sources': [
             'base/dragdrop/os_exchange_data_win_unittest.cc',
             # TODO(brettw) re-enable this when the dependencies on WindowImpl are fixed!
             'gfx/icon_util_unittest.cc',
             'gfx/native_theme_win_unittest.cc',
+            'base/win/hwnd_subclass_unittest.cc',
           ],
           'include_dirs': [
             '../..',
             '../third_party/wtl/include',
           ],
           'msvs_settings': {
             'VCLinkerTool': {
               'DelayLoadDLLs': [
                 'd2d1.dll',
                 'd3d10_1.dll',
@@ skipping 61 matching lines @@
           ],
         }],
         ['OS!="win" or use_aura==0', {
           'sources!': [
             'base/view_prop_unittest.cc',
           ],
         }],
         ['use_aura==1', {
           'sources!': [
             'gfx/screen_unittest.cc',
+            'gfx/native_theme_win_unittest.cc',
+            'base/dragdrop/os_exchange_data_win_unittest.cc',
           ],
         }],
         ['use_aura==1 or toolkit_views==1', {
           'sources': [
             'base/gestures/velocity_calculator_unittest.cc',
           ],
         }],
       ],
     },
   ],
 }