[DevTools] Unpause renderer when paused RenderFrame is closed.

content/renderer/render_widget.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/renderer/render_widget.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 836 matching lines @@
          NO_RESIZE_ACK);
   view_screen_rect_ = new_window_rect;
   window_screen_rect_ = new_window_rect;
   if (!did_show_)
     initial_rect_ = new_window_rect;
 }
 
 void RenderWidget::OnClose() {
   if (closing_)
     return;
+  FOR_EACH_OBSERVER(RenderFrameImpl, render_frames_, WidgetWillClose());
   closing_ = true;
 
   // Browser correspondence is no longer needed at this point.
   if (routing_id_ != MSG_ROUTING_NONE) {
     if (RenderThreadImpl::current())
       RenderThreadImpl::current()->WidgetDestroyed();
     RenderThread::Get()->RemoveRoute(routing_id_);
     SetHidden(false);
   }
 
@@ skipping 1556 matching lines @@
 void RenderWidget::RegisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.RemoveObserver(frame);
 }
 #endif  // defined(VIDEO_HOLE)
 
 }  // namespace content