Ensure that reposting mouse events on Windows posts the message natively via the PostMessage API.

ui/views/event_utils_win.cc

 // Copyright 2013 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.
 
 #include "ui/views/event_utils.h"
 
 #include <windowsx.h>
 
 #include "base/logging.h"
 #include "ui/events/event.h"
 #include "ui/events/event_constants.h"
 #include "ui/gfx/point.h"
 
 namespace views {
 
-bool RepostLocatedEvent(gfx::NativeWindow window,
+#if defined(USE_AURA)
+bool RepostLocatedEventWin(HWND window,

[sky, 2013/12/03 17:16:45]

Can't you go with this signature always? Meaning no ifdef?

+                           const ui::LocatedEvent& event) {
+#else
+bool RepostLocatedEvent(gfx::NativeWindow window
                         const ui::LocatedEvent& event) {
+#endif
   if (!window)
     return false;
 
   // Determine whether the click was in the client area or not.
   // NOTE: WM_NCHITTEST coordinates are relative to the screen.
   const gfx::Point screen_loc = event.location();
   LRESULT nc_hit_result = SendMessage(window, WM_NCHITTEST, 0,
                                       MAKELPARAM(screen_loc.x(),
                                                  screen_loc.y()));
   const bool in_client_area = nc_hit_result == HTCLIENT;
@@ skipping 22 matching lines @@
     window_x -= window_bounds.left;
     window_y -= window_bounds.top;
   }
 
   WPARAM target = in_client_area ? event.native_event().wParam : nc_hit_result;
   PostMessage(window, event_type, target, MAKELPARAM(window_x, window_y));
   return true;
 }
 
 }  // namespace views