Reorganize GUIDs for GPU memory buffers

gpu/ipc/client/gpu_memory_buffer_impl_shared_memory.cc

 // Copyright 2014 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 "gpu/ipc/client/gpu_memory_buffer_impl_shared_memory.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/numerics/safe_math.h"
 #include "base/process/memory.h"
 #include "ui/gfx/buffer_format_util.h"
+#include "ui/gfx/gpu_memory_buffer_tracing.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace gpu {
 
 GpuMemoryBufferImplSharedMemory::GpuMemoryBufferImplSharedMemory(
     gfx::GpuMemoryBufferId id,
     const gfx::Size& size,
     gfx::BufferFormat format,
     const DestructionCallback& callback,
     std::unique_ptr<base::SharedMemory> shared_memory,
@@ skipping 179 matching lines @@
 gfx::GpuMemoryBufferHandle GpuMemoryBufferImplSharedMemory::GetHandle() const {
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::SHARED_MEMORY_BUFFER;
   handle.id = id_;
   handle.offset = offset_;
   handle.stride = stride_;
   handle.handle = shared_memory_->handle();
   return handle;
 }
 
+base::trace_event::MemoryAllocatorDumpGuid
+GpuMemoryBufferImplSharedMemory::GetGUIDForTracing(
+    uint64_t tracing_process_id) const {
+  return gfx::GetSharedMemoryGUIDForTracing(tracing_process_id, id_);
+}
+
 }  // namespace gpu