Reusing base::IdType<...> to implement SurfaceId.

content/common/cc_messages_unittest.cc

 // 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.
 
 #include "content/common/cc_messages.h"
 
 #include <stddef.h>
 #include <string.h>
 #include <algorithm>
 #include <utility>
@@ skipping 372 matching lines @@
 
   StreamVideoDrawQuad* streamvideo_in =
       pass_in->CreateAndAppendDrawQuad<StreamVideoDrawQuad>();
   streamvideo_in->SetAll(
       shared_state3_in, arbitrary_rect2, arbitrary_rect2_inside_rect2,
       arbitrary_rect1_inside_rect2, arbitrary_bool1, arbitrary_resourceid2,
       arbitrary_size1, arbitrary_matrix1);
   pass_cmp->CopyFromAndAppendDrawQuad(streamvideo_in,
                                       streamvideo_in->shared_quad_state);
 
-  cc::SurfaceId arbitrary_surface_id(3);
+  cc::SurfaceId arbitrary_surface_id = cc::SurfaceId::FromUnsafeValue(3);
   SurfaceDrawQuad* surface_in =
       pass_in->CreateAndAppendDrawQuad<SurfaceDrawQuad>();
   surface_in->SetAll(shared_state3_in,
                      arbitrary_rect2,
                      arbitrary_rect2_inside_rect2,
                      arbitrary_rect1_inside_rect2,
                      arbitrary_bool1,
                      arbitrary_surface_id);
   pass_cmp->CopyFromAndAppendDrawQuad(surface_in,
                                       surface_in->shared_quad_state);
@@ skipping 268 matching lines @@
   EXPECT_TRUE(IPC::ParamTraits<DelegatedFrameData>::Read(&msg,
       &iter, &frame_out));
 
   ASSERT_EQ(2u, frame_out.resource_list.size());
   Compare(arbitrary_resource1, frame_out.resource_list[0]);
   Compare(arbitrary_resource2, frame_out.resource_list[1]);
 }
 
 }  // namespace
 }  // namespace content