Remove SupportsWeakPtr from GPUTracer and CommandExecutor

gpu/command_buffer/service/gpu_tracer.h

 // 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.
 
 // This file contains the GPUTrace class.
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
 
 #include <stdint.h>
 
 #include <deque>
 #include <memory>
 #include <stack>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
-#include "base/memory/weak_ptr.h"
 #include "base/threading/thread.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/gpu_export.h"
 
 namespace gl {
 class GPUTimingClient;
 class GPUTimer;
 }
 
 namespace gpu {
@@ skipping 18 matching lines @@
   TraceMarker(const std::string& category, const std::string& name);
   TraceMarker(const TraceMarker& other);
   ~TraceMarker();
 
   std::string category_;
   std::string name_;
   scoped_refptr<GPUTrace> trace_;
 };
 
 // Traces GPU Commands.
-class GPU_EXPORT GPUTracer
-    : public base::SupportsWeakPtr<GPUTracer> {
+class GPU_EXPORT GPUTracer {
  public:
   explicit GPUTracer(gles2::GLES2Decoder* decoder);
   virtual ~GPUTracer();
 
   void Destroy(bool have_context);
 
   // Scheduled processing in decoder begins.
   bool BeginDecoding();
 
   // Scheduled processing in decoder ends.
@@ skipping 145 matching lines @@
 
  private:
   GPUTracer* gpu_tracer_;
   GpuTracerSource source_;
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_