[DevTools] Unpause renderer when paused RenderFrame is closed.

content/renderer/render_frame_impl.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 "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 3771 matching lines @@
   // TODO(kenrb): Need to figure out how to do this better. Should
   // VisibilityState remain a page-level concept or move to frames?
   // The semantics of 'Show' might have to change here.
   if (render_widget_) {
     static_cast<blink::WebFrameWidget*>(render_widget_->webwidget())->
         setVisibilityState(blink::WebPageVisibilityStateVisible, false);
   }
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_, WasShown());
 }
 
+void RenderFrameImpl::WidgetWillClose() {
+  FOR_EACH_OBSERVER(RenderFrameObserver, observers_, WidgetWillClose());
+}
+
 bool RenderFrameImpl::IsHidden() {
   return GetRenderWidget()->is_hidden();
 }
 
 // Tell the embedding application that the URL of the active page has changed.
 void RenderFrameImpl::SendDidCommitProvisionalLoad(
       blink::WebFrame* frame,
       blink::WebHistoryCommitType commit_type) {
   DCHECK(!frame_ || frame_ == frame);
   WebDataSource* ds = frame->dataSource();
@@ skipping 899 matching lines @@
 #elif defined(ENABLE_BROWSER_CDMS)
         cdm_manager_,
 #endif
         this);
   }
 
   return cdm_factory_;
 }
 
 }  // namespace content