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

content/browser/frame_host/render_frame_host_manager.h

 // 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.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_
 
 #include <list>
 
 #include "base/basictypes.h"
@@ skipping 198 matching lines @@
   }
 
   // TODO(creis): Remove this when we no longer use RVH for navigation.
   RenderViewHostImpl* current_host() const;
 
   // Returns the view associated with the current RenderViewHost, or NULL if
   // there is no current one.
   RenderWidgetHostView* GetRenderWidgetHostView() const;
 
   RenderFrameProxyHost* GetProxyToParent();
+  RenderFrameProxyHost* GetProxyToEmbedder();
 
   // Returns the pending RenderFrameHost, or NULL if there is no pending one.
   RenderFrameHostImpl* pending_frame_host() const {
     return pending_render_frame_host_.get();
   }
 
   // TODO(creis): Remove this when we no longer use RVH for navigation.
   RenderViewHostImpl* pending_render_view_host() const;
 
   // Returns the current committed Web UI or NULL if none applies.
   WebUIImpl* web_ui() const { return web_ui_.get(); }
 
   // Returns the Web UI for the pending navigation, or NULL of none applies.
   WebUIImpl* pending_web_ui() const {
     return pending_web_ui_.get() ? pending_web_ui_.get() :
                                    pending_and_current_web_ui_.get();
   }
 
   // PlzNavigate
   // Returns the speculative WebUI for the navigation (a newly created one or
   // the current one if it should be reused). If none is set returns nullptr.
   WebUIImpl* speculative_web_ui() const {
     return should_reuse_web_ui_ ? web_ui_.get() : speculative_web_ui_.get();
   }
 
+  void set_pseudo_parent_frame_tree_node_id(int64 parent_frame_tree_node_id) {
+    pseudo_parent_frame_tree_node_id_ = parent_frame_tree_node_id;
+  }
+
   // Called when we want to instruct the renderer to navigate to the given
   // navigation entry. It may create a new RenderFrameHost or re-use an existing
   // one. The RenderFrameHost to navigate will be returned. Returns NULL if one
   // could not be created.
   RenderFrameHostImpl* Navigate(const NavigationEntryImpl& entry);
 
   // Instructs the various live views to stop. Called when the user directed the
   // page to stop loading.
   void Stop();
 
@@ skipping 355 matching lines @@
   // PlzNavigate: |cross_navigation_pending_| is not used for browser-side
   // navigation.
   bool cross_navigation_pending_;
 
   // Implemented by the owner of this class.  These delegates are installed into
   // all the RenderFrameHosts that we create.
   RenderFrameHostDelegate* render_frame_delegate_;
   RenderViewHostDelegate* render_view_delegate_;
   RenderWidgetHostDelegate* render_widget_delegate_;
 
+  int64 pseudo_parent_frame_tree_node_id_;

[Charlie Reis, 2015/03/10 04:09:44]

Pseudo is not very descriptive.  Do you mean embedder?

(I think it's worth documenting these things now to help us read the CL and
understand it.)

+
   // Our RenderFrameHost and its associated Web UI (if any, will be NULL for
   // non-WebUI pages). This object is responsible for all communication with
   // a child RenderFrame instance.
   // For now, RenderFrameHost keeps a RenderViewHost in its SiteInstance alive.
   // Eventually, RenderViewHost will be replaced with a page context.
   scoped_ptr<RenderFrameHostImpl> render_frame_host_;
   scoped_ptr<WebUIImpl> web_ui_;
 
   // A RenderFrameHost used to load a cross-site page. This remains hidden
   // while a cross-site request is pending until it calls DidNavigate. It may
@@ skipping 59 matching lines @@
   bool should_reuse_web_ui_;
 
   base::WeakPtrFactory<RenderFrameHostManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_