Adds DNS prefetch support to Chromecast.

chrome/renderer/net/prescient_networking_dispatcher.h

Index: chrome/renderer/net/prescient_networking_dispatcher.h
diff --git a/chrome/renderer/net/prescient_networking_dispatcher.h b/chrome/renderer/net/prescient_networking_dispatcher.h
deleted file mode 100644
index 4449307d0a50da1e70b65fce62bb8217a072c50b..0000000000000000000000000000000000000000
--- a/chrome/renderer/net/prescient_networking_dispatcher.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2013 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 CHROME_RENDERER_NET_PRESCIENT_NETWORKING_DISPATCHER_H_
-#define CHROME_RENDERER_NET_PRESCIENT_NETWORKING_DISPATCHER_H_
-
-#include "base/compiler_specific.h"
-#include "components/dns_prefetch/renderer/renderer_net_predictor.h"
-#include "third_party/WebKit/public/platform/WebPrescientNetworking.h"
-
-class PrescientNetworkingDispatcher : public blink::WebPrescientNetworking {
- public:
-  PrescientNetworkingDispatcher();
-  virtual ~PrescientNetworkingDispatcher();
-
-  virtual void prefetchDNS(const blink::WebString& hostname) override;
- private:
-  dns_prefetch::RendererNetPredictor net_predictor_;
-
-  DISALLOW_COPY_AND_ASSIGN(PrescientNetworkingDispatcher);
-};
-
-#endif  // CHROME_RENDERER_NET_PRESCIENT_NETWORKING_DISPATCHER_H_