Make <webview> use out-of-process iframe architecture.

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 <map>
 #include <set>
 #include <string>
@@ skipping 106 matching lines @@
   // Creates a swapped out RenderView. This is used by the browser plugin to
   // create a swapped out RenderView in the embedder render process for the
   // guest, to expose the guest's window object to the embedder.
   // This returns the routing ID of the newly created swapped out RenderView.
   int CreateSwappedOutRenderView(SiteInstance* instance);
 
   // 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);
 
+  int AttachLocalFrameToGuest(WebContents* owner_web_contents,
+                              int embedder_local_render_frame_id,
+                              int guest_instance_id) override;
+
   // 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
   // navigation entry, this allows Android WebViews to use
   // javascript: URLs that load into the DOMWindow before the first page
   // load. This is not safe to do in any context that a web page could get a
   // reference to the DOMWindow before the first page load.
   bool CreateRenderViewForInitialEmptyDocument();
@@ skipping 1130 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_