Remove memory category from chrome://tracing

content/child/child_thread_impl.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.
 
 #ifndef CONTENT_CHILD_CHILD_THREAD_IMPL_H_
 #define CONTENT_CHILD_CHILD_THREAD_IMPL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/memory/weak_ptr.h"
 #include "base/power_monitor/power_monitor.h"
 #include "base/sequenced_task_runner.h"
 #include "base/tracked_objects.h"
 #include "content/child/mojo/mojo_application.h"
 #include "content/common/content_export.h"
 #include "content/common/message_router.h"
 #include "content/common/mojo/channel_init.h"
 #include "content/public/child/child_thread.h"
 #include "ipc/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
 #include "ipc/ipc_platform_file.h"
 
 namespace base {
 class MessageLoop;
-
-namespace trace_event {
-class TraceMemoryController;
-}  // namespace trace_event
 }  // namespace base
 
 namespace IPC {
 class AttachmentBrokerUnprivileged;
 class MessageFilter;
 class ScopedIPCSupport;
 class SyncChannel;
 class SyncMessageFilter;
 }  // namespace IPC
 
@@ skipping 242 matching lines @@
 
   scoped_refptr<PushDispatcher> push_dispatcher_;
 
   scoped_ptr<ChildSharedBitmapManager> shared_bitmap_manager_;
 
   scoped_ptr<ChildGpuMemoryBufferManager> gpu_memory_buffer_manager_;
 
   scoped_ptr<ChildDiscardableSharedMemoryManager>
       discardable_shared_memory_manager_;
 
-  // Observes the trace event system. When tracing is enabled, optionally
-  // starts profiling the tcmalloc heap.
-  scoped_ptr<base::trace_event::TraceMemoryController> trace_memory_controller_;
-
   scoped_ptr<base::PowerMonitor> power_monitor_;
 
   scoped_refptr<ChildMessageFilter> geofencing_message_filter_;
 
   scoped_refptr<base::SequencedTaskRunner> browser_process_io_runner_;
 
   ChannelInit mojo_shell_channel_init_;
 
   base::WeakPtrFactory<ChildThreadImpl> channel_connected_factory_;
 
@@ skipping 27 matching lines @@
 
  private:
   struct Options options_;
 
   DISALLOW_COPY_AND_ASSIGN(Builder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_CHILD_THREAD_IMPL_H_