Make GetURLForDebugging return a const GURL

chrome/plugin/chrome_plugin_host.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/plugin/chrome_plugin_host.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
@@ skipping 100 matching lines @@
             cprequest_.get(), CPERR_FAILURE);
       }
     } else if (read_buffer_) {
       // The plugin was waiting for more data.  Inform him we're done.
       read_buffer_ = NULL;
       plugin_->functions().response_funcs->read_completed(
           cprequest_.get(), CPERR_SUCCESS);
     }
   }
 
-  virtual std::string GetURLForDebugging() {
-    return cprequest_->url;
+  virtual GURL GetURLForDebugging() const {
+    return GURL(cprequest_->url);
   }
 
   void set_extra_headers(const std::string& headers) {
     extra_headers_ = headers;
   }
   void set_load_flags(uint32 flags) {
     load_flags_ = flags;
   }
   void set_sync(bool sync) {
     sync_ = sync;
@@ skipping 550 matching lines @@
 
     response_funcs.size = sizeof(response_funcs);
     response_funcs.received_redirect = CPRR_ReceivedRedirect;
     response_funcs.start_completed = CPRR_StartCompleted;
     response_funcs.read_completed = CPRR_ReadCompleted;
     response_funcs.upload_progress = CPRR_UploadProgress;
   }
 
   return &browser_funcs;
 }