Started on Resource class.

src/shared/ppapi_proxy/plugin_graphics_2d.cc

 /*
  * Copyright 2010 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can
  * be found in the LICENSE file.
  */
 
 #include "native_client/src/shared/ppapi_proxy/plugin_graphics_2d.h"
 
 #include <stdio.h>
 #include <string.h>
@@ skipping 36 matching lines @@
           is_always_opaque_as_int,
           &resource);
   if (retval == NACL_SRPC_RESULT_OK) {
     return static_cast<PP_Resource>(resource);
   } else {
     return kInvalidResourceId;
   }
 }
 
 PP_Bool IsGraphics2D(PP_Resource resource) {
-  int32_t result;
-  NaClSrpcError retval =
-      PpbGraphics2DRpcClient::PPB_Graphics2D_IsGraphics2D(
-          GetMainSrpcChannel(),
-          static_cast<int64_t>(resource),
-          &result);
-  if (retval == NACL_SRPC_RESULT_OK) {
-    return result ? PP_TRUE : PP_FALSE;
-  } else {
-    return PP_FALSE;
-  }
+  return PluginResource::GetAs<PluginGraphics2D>(resource).get()
+      ? PP_TRUE : PP_FALSE;
 }
 
 PP_Bool Describe(PP_Resource graphics_2d,
                  struct PP_Size* size,
                  PP_Bool* is_always_opaque) {
   int32_t is_always_opaque_as_int;
   nacl_abi_size_t size_ret = kPpSizeBytes;
   int32_t result;
   NaClSrpcError retval =
       PpbGraphics2DRpcClient::PPB_Graphics2D_Describe(
@@ skipping 67 matching lines @@
     Describe,
     PaintImageData,
     Scroll,
     ReplaceContents,
     Flush,
   };
   return &intf;
 }
 
 }  // namespace ppapi_proxy