Provide mutable members of UrlRequestContext via pure-virtual interface

webkit/tools/test_shell/test_shell_request_context.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 WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_REQUEST_CONTEXT_H_
 #define WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_REQUEST_CONTEXT_H_
 
 #include "base/threading/thread.h"
 #include "net/http/http_cache.h"
 #include "net/url_request/url_request_context.h"
@@ skipping 16 matching lines @@
   TestShellRequestContext();
 
   // Use an on-disk cache at the specified location.  Optionally, use the cache
   // in playback or record mode.
   TestShellRequestContext(const FilePath& cache_path,
                           net::HttpCache::Mode cache_mode,
                           bool no_proxy);
 
   virtual ~TestShellRequestContext();
 
-  virtual const std::string& GetUserAgent(const GURL& url) const OVERRIDE;
-
   webkit_blob::BlobStorageController* blob_storage_controller() const {
     return blob_storage_controller_.get();
   }
 
   fileapi::FileSystemContext* file_system_context() const {
     return file_system_context_.get();
   }
 
  private:
   void Init(const FilePath& cache_path, net::HttpCache::Mode cache_mode,
             bool no_proxy);
 
   net::URLRequestContextStorage storage_;
   scoped_ptr<webkit_blob::BlobStorageController> blob_storage_controller_;
   scoped_refptr<fileapi::FileSystemContext> file_system_context_;
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_REQUEST_CONTEXT_H_