Remove CHECK when setting the plugin window property. There could be a race condition where the win…

content/browser/renderer_host/render_widget_host_view_aura.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 938 matching lines @@
 
   // Make sure each plugin window (or its wrapper if it exists) has a pointer to
   // |this|.
   for (size_t i = 0; i < moves.size(); ++i) {
     HWND window = moves[i].window;
     if (GetParent(window) != parent) {
       window = GetParent(window);
       DCHECK(GetParent(window) == parent);
     }
     if (!GetProp(window, kWidgetOwnerProperty))
-      CHECK(SetProp(window, kWidgetOwnerProperty, this));
+      SetProp(window, kWidgetOwnerProperty, this);
   }
 #endif  // defined(OS_WIN)
 }
 
 void RenderWidgetHostViewAura::Focus() {
   // Make sure we have a FocusClient before attempting to Focus(). In some
   // situations we may not yet be in a valid Window hierarchy (such as reloading
   // after out of memory discarded the tab).
   aura::client::FocusClient* client = aura::client::GetFocusClient(window_);
   if (client)
@@ skipping 2201 matching lines @@
     RenderWidgetHost* widget) {
   return new RenderWidgetHostViewAura(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content