Extract minimal RenderViewHost interface for embedders, leaving

content/browser/tab_contents/render_view_host_manager.h

Index: content/browser/tab_contents/render_view_host_manager.h
diff --git a/content/browser/tab_contents/render_view_host_manager.h b/content/browser/tab_contents/render_view_host_manager.h
index 06692136f69090ee6cf3eeef6c8774b80f7f27fb..179a400ebe0abddcfdb1868c34013f2a86ab0d05 100644
--- a/content/browser/tab_contents/render_view_host_manager.h
+++ b/content/browser/tab_contents/render_view_host_manager.h
@@ -18,6 +18,7 @@
 class InterstitialPageImpl;
 class NavigationControllerImpl;
 class RenderViewHost;
+class RenderViewHostImpl;
 class WebUIImpl;
 
 namespace content {
@@ -109,18 +110,14 @@ class CONTENT_EXPORT RenderViewHostManager
   // This will be non-NULL between Init() and Shutdown(). You may want to NULL
   // check it in many cases, however. Windows can send us messages during the
   // destruction process after it has been shut down.
-  RenderViewHost* current_host() const {
-    return render_view_host_;
-  }
+  RenderViewHostImpl* current_host() const;
 
   // Returns the view associated with the current RenderViewHost, or NULL if
   // there is no current one.
   content::RenderWidgetHostView* GetRenderWidgetHostView() const;
 
   // Returns the pending render view host, or NULL if there is no pending one.
-  RenderViewHost* pending_render_view_host() const {
-    return pending_render_view_host_;
-  }
+  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(); }
@@ -132,7 +129,7 @@ class CONTENT_EXPORT RenderViewHostManager
   // navigation entry. It may create a new RenderViewHost or re-use an existing
   // one. The RenderViewHost to navigate will be returned. Returns NULL if one
   // could not be created.
-  RenderViewHost* Navigate(const content::NavigationEntryImpl& entry);
+  RenderViewHostImpl* Navigate(const content::NavigationEntryImpl& entry);
 
   // Instructs the various live views to stop. Called when the user directed the
   // page to stop loading.
@@ -242,7 +239,7 @@ class CONTENT_EXPORT RenderViewHostManager
   // Helper method to terminate the pending RenderViewHost.
   void CancelPending();
 
-  RenderViewHost* UpdateRendererStateForNavigate(
+  RenderViewHostImpl* UpdateRendererStateForNavigate(
       const content::NavigationEntryImpl& entry);
 
   // Called when a renderer process is starting to close.  We should not
@@ -264,7 +261,7 @@ class CONTENT_EXPORT RenderViewHostManager
   // Our RenderView host and its associated Web UI (if any, will be NULL for
   // non-DOM-UI pages). This object is responsible for all communication with
   // a child RenderView instance.
-  RenderViewHost* render_view_host_;
+  RenderViewHostImpl* render_view_host_;
   scoped_ptr<WebUIImpl> web_ui_;
 
   // A RenderViewHost used to load a cross-site page. This remains hidden
@@ -276,11 +273,11 @@ class CONTENT_EXPORT RenderViewHostManager
   // is. This will happen when we're transitioning between two Web UI pages:
   // the RVH won't be swapped, so the pending pointer will be unused, but there
   // will be a pending Web UI associated with the navigation.
-  RenderViewHost* pending_render_view_host_;
+  RenderViewHostImpl* pending_render_view_host_;
   scoped_ptr<WebUIImpl> pending_web_ui_;
 
   // A map of site instance ID to swapped out RenderViewHosts.
-  typedef base::hash_map<int32, RenderViewHost*> RenderViewHostMap;
+  typedef base::hash_map<int32, RenderViewHostImpl*> RenderViewHostMap;
   RenderViewHostMap swapped_out_hosts_;
 
   // The intersitial page currently shown if any, not own by this class