remove implementation of obsolete WebKitPlatformSupport::prefetchHostName.

android_webview/renderer/aw_content_renderer_client.cc

 // Copyright 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.
 
 #include "android_webview/renderer/aw_content_renderer_client.h"
 
 #include "android_webview/common/aw_resource.h"
 #include "android_webview/common/url_constants.h"
 #include "android_webview/renderer/aw_render_view_ext.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 84 matching lines @@
 unsigned long long AwContentRendererClient::VisitedLinkHash(
     const char* canonical_url,
     size_t length) {
   return visited_link_slave_->ComputeURLFingerprint(canonical_url, length);
 }
 
 bool AwContentRendererClient::IsLinkVisited(unsigned long long link_hash) {
   return visited_link_slave_->IsVisited(link_hash);
 }
 
-void AwContentRendererClient::PrefetchHostName(const char* hostname,
-                                               size_t length) {
-  // TODO(boliu): Implement hostname prefetch for Android WebView.
-  // Perhaps componentize chrome implementation or move to content/?
-}
-
 }  // namespace android_webview