Mojo C++ bindings: change the first template parameter of StructTraits and UnionTraits.

cc/ipc/compositor_frame_metadata_struct_traits.h

 // Copyright 2016 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.
 
 #ifndef CC_IPC_COMPOSITOR_FRAME_METADATA_STRUCT_TRAITS_H_
 #define CC_IPC_COMPOSITOR_FRAME_METADATA_STRUCT_TRAITS_H_
 
 #include "cc/ipc/compositor_frame_metadata.mojom.h"
 #include "cc/output/compositor_frame_metadata.h"
 
 namespace mojo {
 
 template <>
-struct StructTraits<cc::mojom::CompositorFrameMetadata,
+struct StructTraits<cc::mojom::CompositorFrameMetadataDataView,
                     cc::CompositorFrameMetadata> {
   static float device_scale_factor(
       const cc::CompositorFrameMetadata& metadata) {
     return metadata.device_scale_factor;
   }
 
   static gfx::Vector2dF root_scroll_offset(
       const cc::CompositorFrameMetadata& metadata) {
     return metadata.root_scroll_offset;
   }
@@ skipping 86 matching lines @@
     return metadata.referenced_surfaces;
   }
 
   static bool Read(cc::mojom::CompositorFrameMetadataDataView data,
                    cc::CompositorFrameMetadata* out);
 };
 
 }  // namespace mojo
 
 #endif  // CC_IPC_COMPOSITOR_FRAME_METADATA_STRUCT_TRAITS_H_