WebView: Cleanup class/struct forward declarations

android_webview/browser/net/aw_web_resource_response.h

 // Copyright 2014 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 ANDROID_WEBVIEW_BROWSER_NET_AW_WEB_RESOURCE_RESPONSE_H_
 #define ANDROID_WEBVIEW_BROWSER_NET_AW_WEB_RESOURCE_RESPONSE_H_
 
 #include <memory>
 #include <string>
 
 #include "base/android/jni_android.h"
 #include "base/macros.h"
 
 namespace net {
 class HttpResponseHeaders;
-class NetworkDelegate;
 class URLRequest;
 }
 
 namespace android_webview {
 
 class InputStream;
 
 // This class represents the Java-side data that is to be used to complete a
 // particular URLRequest.
 class AwWebResourceResponse {
@@ skipping 15 matching lines @@
  protected:
   AwWebResourceResponse() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AwWebResourceResponse);
 };
 
 } // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_NET_AW_WEB_RESOURCE_RESPONSE_H_