Add DIRECT_COMPOSITION GpuMemoryBuffer type.

ui/gfx/gpu_memory_buffer.cc

 // Copyright 2013 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 "ui/gfx/gpu_memory_buffer.h"
 
 #include "ui/gfx/generic_shared_memory_id.h"
 
 namespace gfx {
 
@@ skipping 26 matching lines @@
       gfx::GpuMemoryBufferHandle handle;
       handle.type = gfx::NATIVE_PIXMAP;
       handle.id = source_handle.id;
 #if defined(OS_LINUX)
       handle.native_pixmap_handle =
           gfx::CloneHandleForIPC(source_handle.native_pixmap_handle);
 #endif
       return handle;
     }
     case gfx::IO_SURFACE_BUFFER:
+    case gfx::DIRECT_COMPOSITION:
       return source_handle;
   }
   return gfx::GpuMemoryBufferHandle();
 }
 
 base::trace_event::MemoryAllocatorDumpGuid GpuMemoryBuffer::GetGUIDForTracing(
     uint64_t tracing_process_id) const {
   return gfx::GetGenericSharedGpuMemoryGUIDForTracing(tracing_process_id,
                                                       GetId());
 }
 
 }  // namespace gfx