Use macros to define pepper interfaces

ppapi/proxy/ppb_video_capture_proxy.h

Index: ppapi/proxy/ppb_video_capture_proxy.h
diff --git a/ppapi/proxy/ppb_video_capture_proxy.h b/ppapi/proxy/ppb_video_capture_proxy.h
index e8827006f44778f1079ef20ff9e3b905bdce7bce..5695579b26edd6aad6740b7884ab3ba94cf64b51 100644
--- a/ppapi/proxy/ppb_video_capture_proxy.h
+++ b/ppapi/proxy/ppb_video_capture_proxy.h
@@ -21,20 +21,16 @@ namespace proxy {
 
 class PPB_VideoCapture_Proxy : public InterfaceProxy {
  public:
-  PPB_VideoCapture_Proxy(Dispatcher* dispatcher, const void* target_interface);
+  PPB_VideoCapture_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_VideoCapture_Proxy();
 
-  static const Info* GetInfo();
-
   static PP_Resource CreateProxyResource(PP_Instance instance);
 
-  const PPB_VideoCapture_Dev* ppb_video_capture_target() const {
-    return static_cast<const PPB_VideoCapture_Dev*>(target_interface());
-  }
-
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
+  static const InterfaceID kInterfaceID = INTERFACE_ID_PPB_VIDEO_CAPTURE_DEV;
+
  private:
   // Message handlers.
   void OnMsgCreate(PP_Instance instance, ppapi::HostResource* result_resource);
@@ -44,22 +40,22 @@ class PPB_VideoCapture_Proxy : public InterfaceProxy {
   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, const void* target_interface);
+  PPP_VideoCapture_Proxy(Dispatcher* dispatcher);
   virtual ~PPP_VideoCapture_Proxy();
 
   static const Info* GetInfo();
 
-  const PPP_VideoCapture_Dev* ppp_video_capture_target() const {
-    return static_cast<const PPP_VideoCapture_Dev*>(target_interface());
-  }
-
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
+  static const InterfaceID kInterfaceID = INTERFACE_ID_PPP_VIDEO_CAPTURE_DEV;
+
  private:
   // Message handlers.
   void OnMsgOnDeviceInfo(const ppapi::HostResource& video_capture,
@@ -71,6 +67,13 @@ class PPP_VideoCapture_Proxy : public InterfaceProxy {
                     uint32_t error_code);
   void OnMsgOnBufferReady(const ppapi::HostResource& video_capture,
                           uint32_t buffer);
+
+  // When this proxy is in the plugin side, this value caches the interface
+  // 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