Move host resource from the proxy to the shared_impl.

ppapi/proxy/ppb_instance_proxy.h

Index: ppapi/proxy/ppb_instance_proxy.h
diff --git a/ppapi/proxy/ppb_instance_proxy.h b/ppapi/proxy/ppb_instance_proxy.h
index 282f4a99b6721b77a2310ef93d84588cac5fc5a0..c2e8c6ef612b9fa49679b6e050577099c3e22cfe 100644
--- a/ppapi/proxy/ppb_instance_proxy.h
+++ b/ppapi/proxy/ppb_instance_proxy.h
@@ -8,9 +8,9 @@
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
-#include "ppapi/proxy/host_resource.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/shared_impl/function_group_base.h"
+#include "ppapi/shared_impl/host_resource.h"
 #include "ppapi/shared_impl/instance_impl.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 
@@ -74,7 +74,7 @@ class PPB_Instance_Proxy : public InterfaceProxy,
   void OnMsgGetOwnerElementObject(PP_Instance instance,
                                   SerializedVarReturnValue result);
   void OnMsgBindGraphics(PP_Instance instance,
-                         HostResource device,
+                         const ppapi::HostResource& device,
                          PP_Bool* result);
   void OnMsgIsFullFrame(PP_Instance instance, PP_Bool* result);
   void OnMsgExecuteScript(PP_Instance instance,