PlzNavigate: Get StreamPrivate API to work.

content/browser/web_contents/web_contents_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 112 matching lines @@
 
   static WebContentsImpl* CreateWithOpener(
       const WebContents::CreateParams& params,
       FrameTreeNode* opener);
 
   static std::vector<WebContentsImpl*> GetAllWebContents();
 
   static WebContentsImpl* FromFrameTreeNode(FrameTreeNode* frame_tree_node);
   static WebContents* FromRenderFrameHostID(int render_process_host_id,
                                             int render_frame_host_id);
+  static WebContents* FromFrameTreeNodeId(int frame_tree_node_id);
 
   // Complex initialization here. Specifically needed to avoid having
   // members call back into our virtual functions in the constructor.
   virtual void Init(const WebContents::CreateParams& params);
 
   // Returns the SavePackage which manages the page saving job. May be NULL.
   SavePackage* save_package() const { return save_package_.get(); }
 
 #if defined(OS_ANDROID)
   // In Android WebView, the RenderView needs created even there is no
@@ skipping 1333 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_