Fix Aura build.

content/content_browser.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.
 
 {
   'dependencies': [
     'browser/debugger/devtools_resources.gyp:devtools_resources',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:http_server',
@@ skipping 810 matching lines @@
         ['exclude', '^browser/accessibility/browser_accessibility_manager_win.h'],
         ['exclude', '^browser/accessibility/browser_accessibility_win.cc'],
         ['exclude', '^browser/accessibility/browser_accessibility_win.h'],
         ['exclude', '^browser/renderer_host/gtk_im_context_wrapper.cc'],
         ['exclude', '^browser/renderer_host/gtk_im_context_wrapper.h'],
         ['exclude', '^browser/renderer_host/native_web_keyboard_event_win.cc'],
         ['exclude', '^browser/renderer_host/render_widget_host.h'],
         ['exclude', '^browser/renderer_host/render_widget_host_view_win.cc'],
         ['exclude', '^browser/renderer_host/render_widget_host_view_win.h'],
         ['exclude', '^browser/renderer_host/render_message_filter_win.cc'],
+        ['exclude', '^browser/tab_contents/web_drag_source_win.cc'],
+        ['exclude', '^browser/tab_contents/web_drag_source_win.h'],
       ],
     }, {
       'sources/': [
         ['exclude', '^browser/renderer_host/image_transport_client.cc'],
         ['exclude', '^browser/renderer_host/image_transport_client.h'],
         ['exclude', '^browser/renderer_host/image_transport_factory.cc'],
         ['exclude', '^browser/renderer_host/image_transport_factory.h'],
         ['exclude', '^browser/renderer_host/render_widget_host_view_aura.cc'],
         ['exclude', '^browser/renderer_host/render_widget_host_view_aura.h'],
       ],
@@ skipping 25 matching lines @@
       ],
     }],
     ['input_speech==0', {
       'sources/': [
         ['exclude', '^browser/speech/'],
       ],
     }],
   ],
 }