Implement NavigationThrottle::BLOCK_REQUEST_AND_COLLAPSE.

content/renderer/render_frame_proxy.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_RENDERER_RENDER_FRAME_PROXY_H_
 #define CONTENT_RENDERER_RENDER_FRAME_PROXY_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
@@ skipping 152 matching lines @@
   void OnChildFrameProcessGone();
   void OnCompositorFrameSwapped(const IPC::Message& message);
   void OnSetChildFrameSurface(const cc::SurfaceInfo& surface_info,
                               const cc::SurfaceSequence& sequence);
   void OnUpdateOpener(int opener_routing_id);
   void OnDidStopLoading();
   void OnDidUpdateFramePolicy(
       blink::WebSandboxFlags flags,
       const ParsedFeaturePolicyHeader& container_policy);
   void OnDispatchLoad();
+  void OnCollapse(bool collapsed);
   void OnDidUpdateName(const std::string& name, const std::string& unique_name);
   void OnAddContentSecurityPolicies(
       const std::vector<ContentSecurityPolicyHeader>& header);
   void OnResetContentSecurityPolicy();
   void OnEnforceInsecureRequestPolicy(blink::WebInsecureRequestPolicy policy);
   void OnSetFrameOwnerProperties(const FrameOwnerProperties& properties);
   void OnDidUpdateOrigin(const url::Origin& origin,
                          bool is_potentially_trustworthy_unique_origin);
   void OnSetPageFocus(bool is_focused);
   void OnSetFocusedFrame();
@@ skipping 14 matching lines @@
 
   RenderViewImpl* render_view_;
   RenderWidget* render_widget_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameProxy);
 };
 
 }  // namespace
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_PROXY_H_