Changed the GPU Tracer so the category names can be customized.

gpu/command_buffer/client/gles2_implementation.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 GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 
 #include <GLES2/gl2.h>
 
 #include <list>
@@ skipping 699 matching lines @@
 
   scoped_ptr<QueryTracker> query_tracker_;
   typedef std::map<GLuint, QueryTracker::Query*> QueryMap;
   QueryMap current_queries_;
   scoped_ptr<IdAllocator> query_id_allocator_;
 
   scoped_ptr<BufferTracker> buffer_tracker_;
 
   GLES2ImplementationErrorMessageCallback* error_message_callback_;
 
+  scoped_ptr<std::string> current_trace_category_;
   scoped_ptr<std::string> current_trace_name_;
 
   GpuControl* gpu_control_;
 
   Capabilities capabilities_;
 
   base::WeakPtrFactory<GLES2Implementation> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GLES2Implementation);
 };
@@ skipping 28 matching lines @@
 
 inline bool GLES2Implementation::GetTexParameterivHelper(
     GLenum /* target */, GLenum /* pname */, GLint* /* params */) {
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_