Implement device enumeration for PPB_VideoCapture_Dev.

ppapi/proxy/ppb_video_capture_proxy.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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 PPAPI_PROXY_PPB_VIDEO_CAPTURE_PROXY_H_
 #define PPAPI_PROXY_PPB_VIDEO_CAPTURE_PROXY_H_
 
+#include <string>
 #include <vector>
 
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/interface_proxy.h"
+#include "ppapi/proxy/proxy_non_thread_safe_ref_count.h"
 #include "ppapi/proxy/serialized_structs.h"
+#include "ppapi/shared_impl/ppb_device_ref_shared.h"
+#include "ppapi/utility/completion_callback_factory.h"
 
 struct PPP_VideoCapture_Dev;
 struct PP_VideoCaptureDeviceInfo_Dev;
 
 namespace ppapi {
 
 class HostResource;
 
 namespace proxy {
 
 class PPB_VideoCapture_Proxy : public InterfaceProxy {
  public:
   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.
+  // Message handlers in the renderer process.
   void OnMsgCreate(PP_Instance instance, ppapi::HostResource* result_resource);
+  void OnMsgEnumerateDevices(const ppapi::HostResource& resource);
   void OnMsgStartCapture(const ppapi::HostResource& resource,
+                         const std::string& device_id,
                          const PP_VideoCaptureDeviceInfo_Dev& info,
                          uint32_t buffers);
   void OnMsgReuseBuffer(const ppapi::HostResource& resource,
                         uint32_t buffer);
   void OnMsgStopCapture(const ppapi::HostResource& resource);
 
+  // Message handlers in the plugin process.
+  void OnMsgEnumerateDevicesACK(
+      const ppapi::HostResource& resource,
+      int32_t result,
+      const std::vector<ppapi::DeviceRefData>& devices);
+
+  void EnumerateDevicesACKInHost(int32_t result,
+                                 const ppapi::HostResource& resource);
+
+  pp::CompletionCallbackFactory<PPB_VideoCapture_Proxy,
+                                ProxyNonThreadSafeRefCount> callback_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(PPB_VideoCapture_Proxy);
 };
 
 class PPP_VideoCapture_Proxy : public InterfaceProxy {
  public:
   explicit PPP_VideoCapture_Proxy(Dispatcher* dispatcher);
   virtual ~PPP_VideoCapture_Proxy();
 
   static const Info* GetInfo();
 
@@ skipping 19 matching lines @@
   // 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_PROXY_PPB_VIDEO_CAPTURE_PROXY_H_