Migrate Graphics2D to new design.

ppapi/proxy/ppb_instance_proxy.cc

Index: ppapi/proxy/ppb_instance_proxy.cc
diff --git a/ppapi/proxy/ppb_instance_proxy.cc b/ppapi/proxy/ppb_instance_proxy.cc
index 5f0c163306a624c15b495279a352d5f0dbb66d92..c099752be001b4d38c6014ea0c26be9359e11175 100644
--- a/ppapi/proxy/ppb_instance_proxy.cc
+++ b/ppapi/proxy/ppb_instance_proxy.cc
@@ -189,7 +189,7 @@ PP_Bool PPB_Instance_Proxy::BindGraphics(PP_Instance instance,
 
   PP_Bool result = PP_FALSE;
   dispatcher()->Send(new PpapiHostMsg_PPBInstance_BindGraphics(
-      API_ID_PPB_INSTANCE, instance, object->host_resource(),
+      API_ID_PPB_INSTANCE, instance, object->pp_resource(),
       &result));
   return result;
 }
@@ -681,12 +681,11 @@ void PPB_Instance_Proxy::OnHostMsgGetOwnerElementObject(
 }
 
 void PPB_Instance_Proxy::OnHostMsgBindGraphics(PP_Instance instance,
-                                               const HostResource& device,
+                                               PP_Resource device,
                                                PP_Bool* result) {
   EnterInstanceNoLock enter(instance);
   if (enter.succeeded()) {
-    *result = enter.functions()->BindGraphics(instance,
-                                              device.host_resource());
+    *result = enter.functions()->BindGraphics(instance, device);
   }
 }