content: Cleanup class/struct forward declarations

content/renderer/pepper/pepper_websocket_host.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 CONTENT_RENDERER_PEPPER_PEPPER_WEBSOCKET_HOST_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_WEBSOCKET_HOST_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <queue>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "ppapi/host/host_message_context.h"
 #include "ppapi/host/resource_host.h"
 #include "ppapi/proxy/resource_message_params.h"
 #include "third_party/WebKit/public/web/WebPepperSocket.h"
 #include "third_party/WebKit/public/web/WebPepperSocketClient.h"
 
-namespace ppapi {
-class StringVar;
-class Var;
-}  // namespace ppapi
-
 namespace content {
 
 class RendererPpapiHost;
 
 class CONTENT_EXPORT PepperWebSocketHost
     : public ppapi::host::ResourceHost,
       public NON_EXPORTED_BASE(::blink::WebPepperSocketClient) {
  public:
   explicit PepperWebSocketHost(RendererPpapiHost* host,
                                PP_Instance instance,
@@ skipping 57 matching lines @@
   // Keeps the WebKit side WebSocket object. This is used for calling WebKit
   // side functions via WebKit API.
   std::unique_ptr<blink::WebPepperSocket> websocket_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperWebSocketHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_WEBSOCKET_HOST_H_