Move the core drag&drop code for Windows to content\browser to match Mac/GTK. I've had to add tempo…

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 640 matching lines @@
     'browser/tab_contents/title_updated_details.h',
     'browser/tab_contents/web_contents_view_android.cc',
     'browser/tab_contents/web_contents_view_android.h',
     'browser/tab_contents/web_contents_view_mac.h',
     'browser/tab_contents/web_contents_view_mac.mm',
     'browser/tab_contents/web_drag_dest_delegate.h',
     'browser/tab_contents/web_drag_dest_gtk.cc',
     'browser/tab_contents/web_drag_dest_gtk.h',
     'browser/tab_contents/web_drag_dest_mac.h',
     'browser/tab_contents/web_drag_dest_mac.mm',
+    'browser/tab_contents/web_drag_dest_win.cc',
+    'browser/tab_contents/web_drag_dest_win.h',
     'browser/tab_contents/web_drag_source_gtk.cc',
     'browser/tab_contents/web_drag_source_gtk.h',
     'browser/tab_contents/web_drag_source_mac.h',
     'browser/tab_contents/web_drag_source_mac.mm',
+    'browser/tab_contents/web_drag_source_win.cc',
+    'browser/tab_contents/web_drag_source_win.h',
+    'browser/tab_contents/web_drag_utils_win.cc',
+    'browser/tab_contents/web_drag_utils_win.h',
     'browser/trace_controller.cc',
     'browser/trace_controller.h',
     'browser/trace_message_filter.cc',
     'browser/trace_message_filter.h',
     'browser/trace_subscriber_stdio.cc',
     'browser/trace_subscriber_stdio.h',
     'browser/user_metrics.cc',
     'browser/utility_process_host_impl.cc',
     'browser/utility_process_host_impl.h',
     'browser/webui/web_ui_impl.cc',
@@ skipping 185 matching lines @@
       ],
     }],
     ['input_speech==0', {
       'sources/': [
         ['exclude', '^browser/speech/'],
       ],
     }],
   ],
 }