Enable clear cache/cookies support in developer tools

content/browser/content_browser_client.h

 // Copyright (c) 2011 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_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #pragma once
 
 #include <string>
 
@@ skipping 220 matching lines @@
   virtual int GetCrashSignalFD(const std::string& process_type) = 0;
 #endif
 
 #if defined(USE_NSS)
   // Return a delegate to authenticate and unlock |module|.
   // This is called on a worker thread.
   virtual
       crypto::CryptoModuleBlockingPasswordDelegate* GetCryptoPasswordDelegate(
           const GURL& url) = 0;
 #endif
+
+  // Clears browser cache.
+  virtual void ClearCache(RenderViewHost* rvh) = 0;
+
+  // Clears browser cookies.
+  virtual void ClearCookies(RenderViewHost* rvh) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_CONTENT_BROWSER_CLIENT_H_