remove implementation of obsolete WebKitPlatformSupport::prefetchHostName.

webkit/support/test_webkit_platform_support.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_SUPPORT_TEST_WEBKIT_PLATFORM_SUPPORT_H_
 #define WEBKIT_SUPPORT_TEST_WEBKIT_PLATFORM_SUPPORT_H_
 
 #include "base/compiler_specific.h"
 #include "base/files/scoped_temp_dir.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
@@ skipping 33 matching lines @@
   virtual WebKit::WebSandboxSupport* sandboxSupport();
   virtual WebKit::WebBlobRegistry* blobRegistry();
   virtual WebKit::WebHyphenator* hyphenator();
   virtual WebKit::WebIDBFactory* idbFactory();
 
   virtual bool sandboxEnabled();
   virtual unsigned long long visitedLinkHash(const char* canonicalURL,
                                              size_t length);
   virtual bool isLinkVisited(unsigned long long linkHash);
   virtual WebKit::WebMessagePortChannel* createMessagePortChannel();
-  virtual void prefetchHostName(const WebKit::WebString&);
   virtual WebKit::WebURLLoader* createURLLoader();
   virtual WebKit::WebData loadResource(const char* name);
   virtual WebKit::WebString queryLocalizedString(
       WebKit::WebLocalizedString::Name name);
   virtual WebKit::WebString queryLocalizedString(
       WebKit::WebLocalizedString::Name name,
       const WebKit::WebString& value);
   virtual WebKit::WebString queryLocalizedString(
       WebKit::WebLocalizedString::Name name,
       const WebKit::WebString& value1,
@@ skipping 91 matching lines @@
 
   scoped_refptr<cc::ContextProvider> main_thread_contexts_;
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
   WebKit::WebThemeEngine* active_theme_engine_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(TestWebKitPlatformSupport);
 };
 
 #endif  // WEBKIT_SUPPORT_TEST_WEBKIT_PLATFORM_SUPPORT_H_