Change URLRequest to use a ref-counted buffer for actual IO....

chrome/browser/renderer_host/cross_site_resource_handler.h

 // Copyright (c) 2006-2008 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 CHROME_BROWSER_RENDERER_HOST_CROSS_SITE_RESOURCE_HANDLER_H_
 #define CHROME_BROWSER_RENDERER_HOST_CROSS_SITE_RESOURCE_HANDLER_H_
 
 #include "chrome/browser/renderer_host/resource_dispatcher_host.h"
 #include "chrome/browser/renderer_host/resource_handler.h"
 
 // Ensures that cross-site responses are delayed until the onunload handler of
 // the previous page is allowed to run.  This handler wraps an
 // AsyncEventHandler, and it sits inside SafeBrowsing and Buffered event
 // handlers.  This is important, so that it can intercept OnResponseStarted
 // after we determine that a response is safe and not a download.
 class CrossSiteResourceHandler : public ResourceHandler {
  public:
   CrossSiteResourceHandler(ResourceHandler* handler,
                            int render_process_host_id,
                            int render_view_id,
                            ResourceDispatcherHost* resource_dispatcher_host);
 
   // ResourceHandler implementation:
   bool OnRequestRedirected(int request_id, const GURL& new_url);
   bool OnResponseStarted(int request_id,
                          ResourceResponse* response);
-  bool OnWillRead(int request_id, char** buf, int* buf_size, int min_size);
+  bool OnWillRead(int request_id, net::IOBuffer** buf, int* buf_size,
+                  int min_size);
   bool OnReadCompleted(int request_id, int* bytes_read);
   bool OnResponseCompleted(int request_id, const URLRequestStatus& status);
 
   // We can now send the response to the new renderer, which will cause
   // WebContents to swap in the new renderer and destroy the old one.
   void ResumeResponse();
 
  private:
   // Prepare to render the cross-site response in a new RenderViewHost, by
   // telling the old RenderViewHost to run its onunload handler.
@@ skipping 10 matching lines @@
   int request_id_;
   bool completed_during_transition_;
   URLRequestStatus completed_status_;
   ResourceResponse* response_;
   ResourceDispatcherHost* rdh_;
 
   DISALLOW_COPY_AND_ASSIGN(CrossSiteResourceHandler);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_CROSS_SITE_RESOURCE_HANDLER_H_