Make GetURLForDebugging return a const GURL

chrome/common/security_filter_peer.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_COMMON_SECURITY_FILTER_PEER_H__
 #define CHROME_COMMON_SECURITY_FILTER_PEER_H__
 
 #include "chrome/common/filter_policy.h"
 #include "webkit/glue/resource_loader_bridge.h"
@@ skipping 30 matching lines @@
   virtual void OnUploadProgress(uint64 position, uint64 size);
   virtual bool OnReceivedRedirect(
       const GURL& new_url,
       const webkit_glue::ResourceLoaderBridge::ResponseInfo& info);
   virtual void OnReceivedResponse(
       const webkit_glue::ResourceLoaderBridge::ResponseInfo& info,
       bool content_filtered);
   virtual void OnReceivedData(const char* data, int len);
   virtual void OnCompletedRequest(const URLRequestStatus& status,
                                   const std::string& security_info);
-  virtual std::string GetURLForDebugging();
+  virtual GURL GetURLForDebugging() const;
 
  protected:
   SecurityFilterPeer(webkit_glue::ResourceLoaderBridge* resource_loader_bridge,
                      webkit_glue::ResourceLoaderBridge::Peer* peer);
 
   webkit_glue::ResourceLoaderBridge::Peer* original_peer_;
   webkit_glue::ResourceLoaderBridge* resource_loader_bridge_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SecurityFilterPeer);
@@ skipping 73 matching lines @@
   virtual ~ImageFilterPeer();
 
  protected:
   virtual bool DataReady();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ImageFilterPeer);
 };
 
 #endif  // CHROME_COMMON_SECURITY_FILTER_PEER_H__