Cleanup: Remove unneeded forward declarations in ppapi.

ppapi/proxy/ppb_video_capture_proxy.h

 // Copyright (c) 2011 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 PPAPI_PPB_VIDEO_CAPTURE_PROXY_H_
-#define PPAPI_PPB_VIDEO_CAPTURE_PROXY_H_
+#ifndef PPAPI_PROXY_PPB_VIDEO_CAPTURE_PROXY_H_
+#define PPAPI_PROXY_PPB_VIDEO_CAPTURE_PROXY_H_
+
+#include <vector>
 
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/proxy/serialized_structs.h"
 
-struct PPB_VideoCapture_Dev;
 struct PPP_VideoCapture_Dev;
 struct PP_VideoCaptureDeviceInfo_Dev;
 
 namespace ppapi {
 
 class HostResource;
 
 namespace proxy {
 
 class PPB_VideoCapture_Proxy : public InterfaceProxy {
  public:
-  PPB_VideoCapture_Proxy(Dispatcher* dispatcher);
+  explicit PPB_VideoCapture_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_VideoCapture_Proxy();
 
   static PP_Resource CreateProxyResource(PP_Instance instance);
 
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
   static const ApiID kApiID = API_ID_PPB_VIDEO_CAPTURE_DEV;
 
  private:
   // Message handlers.
   void OnMsgCreate(PP_Instance instance, ppapi::HostResource* result_resource);
   void OnMsgStartCapture(const ppapi::HostResource& resource,
                          const PP_VideoCaptureDeviceInfo_Dev& info,
                          uint32_t buffers);
   void OnMsgReuseBuffer(const ppapi::HostResource& resource,
                         uint32_t buffer);
   void OnMsgStopCapture(const ppapi::HostResource& resource);
 
   DISALLOW_COPY_AND_ASSIGN(PPB_VideoCapture_Proxy);
 };
 
 class PPP_VideoCapture_Proxy : public InterfaceProxy {
  public:
-  PPP_VideoCapture_Proxy(Dispatcher* dispatcher);
+  explicit PPP_VideoCapture_Proxy(Dispatcher* dispatcher);
   virtual ~PPP_VideoCapture_Proxy();
 
   static const Info* GetInfo();
 
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
   static const ApiID kApiID = API_ID_PPP_VIDEO_CAPTURE_DEV;
 
  private:
@@ skipping 12 matching lines @@
   // pointer so we don't have to retrieve it from the dispatcher each time.
   // In the host, this value is always NULL.
   const PPP_VideoCapture_Dev* ppp_video_capture_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(PPP_VideoCapture_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
-#endif  // PPAPI_PPB_VIDEO_CAPTURE_PROXY_H_
+#endif  // PPAPI_PROXY_PPB_VIDEO_CAPTURE_PROXY_H_