[wip] Introduce SiteInstanceKeepAlive.

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 "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 257 matching lines @@
 
   // Runs the unload handler in the current page, when we know that a pending
   // cross-process navigation is going to commit.  We may initiate a transfer
   // to a new process after this completes or times out.
   void SwapOutOldPage();
 
   // Deletes a RenderFrameHost that was pending shutdown.
   void ClearPendingShutdownRFHForSiteInstance(int32 site_instance_id,
                                               RenderFrameHostImpl* rfh);
 
+  // Shutdown all RenderFrameHosts in a SiteInstance. This is called to shutdown
+  // frames when all the frames in a SiteInstance are confirmed to be swapped
+  // out.
+  static void ShutdownRenderFrameHostsInSiteInstance(int32 site_instance_id);
+
  private:
   friend class RenderFrameHostManagerTest;
   friend class TestWebContents;
 
   // Tracks information about a navigation while a cross-process transition is
   // in progress, in case we need to transfer it to a new RenderFrameHost.
   // When a request is being transferred, deleting the PendingNavigationParams,
   // and thus |cross_site_transferring_request|, will cancel the request being
   // transferred, unless its ReleaseRequest method has been called.
   struct PendingNavigationParams {
@@ skipping 83 matching lines @@
   // initialized for another RenderFrameHost.
   // TODO(creis): opener_route_id is currently for the RenderViewHost but should
   // be for the RenderFrame, since frames can have openers.
   bool InitRenderView(RenderViewHost* render_view_host, int opener_route_id);
 
   // Sets the pending RenderFrameHost/WebUI to be the active one. Note that this
   // doesn't require the pending render_frame_host_ pointer to be non-NULL,
   // since there could be Web UI switching as well. Call this for every commit.
   void CommitPending();
 
-  // Shutdown all RenderFrameHosts in a SiteInstance. This is called to shutdown
-  // frames when all the frames in a SiteInstance are confirmed to be swapped
-  // out.
-  void ShutdownRenderFrameHostsInSiteInstance(int32 site_instance_id);
-
   // Helper method to terminate the pending RenderViewHost.
   void CancelPending();
 
   RenderFrameHostImpl* UpdateRendererStateForNavigate(
       const NavigationEntryImpl& entry);
 
   // Called when a renderer process is starting to close.  We should not
   // schedule new navigations in its swapped out RenderFrameHosts after this.
   void RendererProcessClosing(RenderProcessHost* render_process_host);
 
@@ skipping 68 matching lines @@
   CrossProcessFrameConnector* cross_process_frame_connector_;
 
   base::WeakPtrFactory<RenderFrameHostManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_