Corresponding change in Pepper since EnumerateDevices contract is changed.

ppapi/proxy/ppb_video_capture_proxy.cc

Index: ppapi/proxy/ppb_video_capture_proxy.cc
===================================================================
--- ppapi/proxy/ppb_video_capture_proxy.cc	(revision 148913)
+++ ppapi/proxy/ppb_video_capture_proxy.cc	(working copy)
@@ -165,6 +165,8 @@
   virtual int32_t InternalEnumerateDevices(
       PP_Resource* devices,
       scoped_refptr<TrackedCallback> callback) OVERRIDE;
+  virtual int32_t InternalStopEnumerateDevices(
+      PP_Resource* devices) OVERRIDE;
   virtual int32_t InternalOpen(
       const std::string& device_id,
       const PP_VideoCaptureDeviceInfo_Dev& requested_info,
@@ -223,6 +225,14 @@
   return PP_OK_COMPLETIONPENDING;
 }
 
+int32_t VideoCapture::InternalStopEnumerateDevices(PP_Resource* devices) {
+  if (devices_ == devices) {
+    GetDispatcher()->Send(new PpapiHostMsg_PPBVideoCapture_StopEnumerateDevices(
+        API_ID_PPB_VIDEO_CAPTURE_DEV, host_resource()));
+  }
+  return PP_OK;
+}
+
 int32_t VideoCapture::InternalOpen(
     const std::string& device_id,
     const PP_VideoCaptureDeviceInfo_Dev& requested_info,
@@ -307,6 +317,8 @@
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_Create, OnMsgCreate)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_EnumerateDevices,
                         OnMsgEnumerateDevices)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_StopEnumerateDevices,
+                        OnMsgStopEnumerateDevices)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_Open, OnMsgOpen)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_StartCapture,
                         OnMsgStartCapture)
@@ -348,6 +360,13 @@
     enter.SetResult(enter.object()->EnumerateDevices(NULL, enter.callback()));
 }
 
+void PPB_VideoCapture_Proxy::OnMsgStopEnumerateDevices(
+    const HostResource& resource) {
+  EnterHostFromHostResource<PPB_VideoCapture_API> enter(resource);
+  if (enter.succeeded())
+    enter.object()->StopEnumerateDevices(NULL);
+}
+
 void PPB_VideoCapture_Proxy::OnMsgOpen(
     const ppapi::HostResource& resource,
     const std::string& device_id,