Eliminate SwapOut message parameters, keeping state in RVHM instead.

content/browser/cross_site_request_manager.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_CROSS_SITE_REQUEST_MANAGER_H_
 #define CONTENT_BROWSER_CROSS_SITE_REQUEST_MANAGER_H_
 
 #include <set>
 #include <utility>
 
@@ skipping 12 matching lines @@
 // CrossSiteRequestManager is a singleton that may be used on any thread.
 //
 class CrossSiteRequestManager {
  public:
   // Returns the singleton instance.
   static CrossSiteRequestManager* GetInstance();
 
   // Returns whether the RenderViewHost specified by the given IDs currently
   // has a pending cross-site request.  If so, we will have to delay the
   // response until the previous RenderViewHost runs its onunload handler.
-  // Called by ResourceDispatcherHost on the IO thread.
+  // Called by ResourceDispatcherHost on the IO thread and RenderViewHost on
+  // the UI thread.
   bool HasPendingCrossSiteRequest(int renderer_id, int render_view_id);
 
   // Sets whether the RenderViewHost specified by the given IDs currently has a
   // pending cross-site request.  Called by RenderViewHost on the UI thread.
   void SetHasPendingCrossSiteRequest(int renderer_id,
                                      int render_view_id,
                                      bool has_pending);
 
  private:
   friend struct DefaultSingletonTraits<CrossSiteRequestManager>;
@@ skipping 10 matching lines @@
   // RenderViewHosts that have pending cross-site requests.  Used to pass
   // information about the RenderViewHosts between the UI and IO threads.
   RenderViewSet pending_cross_site_views_;
 
   DISALLOW_COPY_AND_ASSIGN(CrossSiteRequestManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_CROSS_SITE_REQUEST_MANAGER_H_