Get drag and drop working for win aura.

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': [
       ['use_aura==1', {
@@ skipping 341 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_aura/desktop_activation_client.cc',
         'widget/desktop_aura/desktop_activation_client.h',
         'widget/desktop_aura/desktop_cursor_client.cc',
         'widget/desktop_aura/desktop_cursor_client.h',
         'widget/desktop_aura/desktop_dispatcher_client.cc',
         'widget/desktop_aura/desktop_dispatcher_client.h',
+        'widget/desktop_aura/desktop_drag_drop_client_win.cc',
+        'widget/desktop_aura/desktop_drag_drop_client_win.h',
         'widget/desktop_aura/desktop_layout_manager.cc',
         'widget/desktop_aura/desktop_layout_manager.h',
         'widget/desktop_aura/desktop_native_widget_aura.cc',
         'widget/desktop_aura/desktop_native_widget_aura.h',
         'widget/desktop_aura/desktop_root_window_host.h',
         'widget/desktop_aura/desktop_root_window_host_linux.cc',
         'widget/desktop_aura/desktop_root_window_host_linux.h',
         'widget/desktop_aura/desktop_root_window_host_win.cc',
         'widget/desktop_aura/desktop_root_window_host_win.h',
         'widget/desktop_aura/desktop_screen.h',
@@ skipping 96 matching lines @@
               'sources/': [
                 ['exclude', 'mouse_watcher.cc'],
                 ['exclude', 'controls/menu/'],
                 ['exclude', 'controls/scrollbar/'],
                 ['exclude', 'focus/accelerator_handler_aura.cc'],
               ],
             }],
             ['OS=="win"', {
               'sources/': [
                 ['include', 'ime/input_method_win.cc'],
-                ['include', 'ime/input_method_win.h'],
+                ['include', 'widget/desktop_aura/desktop_drag_drop_client_win.cc'],
                 ['include', 'widget/desktop_aura/desktop_screen_win.cc'],
-                ['include', 'widget/desktop_aura/desktop_screen_win.h'],
                 ['include', 'widget/desktop_aura/desktop_root_window_host_win.cc'],
-                ['include', 'widget/desktop_aura/desktop_root_window_host_win.h'],
+                ['include', 'widget/drop_target_win.c'],
               ],
             }],
           ],
         }],
         ['use_aura==0', {
           'sources/': [
             ['exclude', 'corewm'],
             ['exclude', 'widget/desktop_aura'],
           ],
           'sources!': [
@@ skipping 483 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
   ],
 }