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

gpu/command_buffer/common/gles2_cmd_format_autogen.h

 // 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 9728 matching lines @@
   static const CommandId kCmdId = kTraceBeginCHROMIUM;
   static const cmd::ArgFlags kArgFlags = cmd::kFixed;
   static const uint8 cmd_flags = CMD_FLAG_SET_TRACE_LEVEL(3);
 
   static uint32_t ComputeSize() {
     return static_cast<uint32_t>(sizeof(ValueType));  // NOLINT
   }
 
   void SetHeader() { header.SetCmd<ValueType>(); }
 
-  void Init(GLuint _bucket_id) {
+  void Init(GLuint _category_bucket_id, GLuint _name_bucket_id) {
     SetHeader();
-    bucket_id = _bucket_id;
+    category_bucket_id = _category_bucket_id;
+    name_bucket_id = _name_bucket_id;
   }
 
-  void* Set(void* cmd, GLuint _bucket_id) {
-    static_cast<ValueType*>(cmd)->Init(_bucket_id);
+  void* Set(void* cmd, GLuint _category_bucket_id, GLuint _name_bucket_id) {
+    static_cast<ValueType*>(cmd)->Init(_category_bucket_id, _name_bucket_id);
     return NextCmdAddress<ValueType>(cmd);
   }
 
   gpu::CommandHeader header;
-  uint32_t bucket_id;
+  uint32_t category_bucket_id;
+  uint32_t name_bucket_id;
 };
 
-COMPILE_ASSERT(sizeof(TraceBeginCHROMIUM) == 8,
-               Sizeof_TraceBeginCHROMIUM_is_not_8);
+COMPILE_ASSERT(sizeof(TraceBeginCHROMIUM) == 12,
+               Sizeof_TraceBeginCHROMIUM_is_not_12);
 COMPILE_ASSERT(offsetof(TraceBeginCHROMIUM, header) == 0,
                OffsetOf_TraceBeginCHROMIUM_header_not_0);
-COMPILE_ASSERT(offsetof(TraceBeginCHROMIUM, bucket_id) == 4,
-               OffsetOf_TraceBeginCHROMIUM_bucket_id_not_4);
+COMPILE_ASSERT(offsetof(TraceBeginCHROMIUM, category_bucket_id) == 4,
+               OffsetOf_TraceBeginCHROMIUM_category_bucket_id_not_4);
+COMPILE_ASSERT(offsetof(TraceBeginCHROMIUM, name_bucket_id) == 8,
+               OffsetOf_TraceBeginCHROMIUM_name_bucket_id_not_8);
 
 struct TraceEndCHROMIUM {
   typedef TraceEndCHROMIUM ValueType;
   static const CommandId kCmdId = kTraceEndCHROMIUM;
   static const cmd::ArgFlags kArgFlags = cmd::kFixed;
   static const uint8 cmd_flags = CMD_FLAG_SET_TRACE_LEVEL(3);
 
   static uint32_t ComputeSize() {
     return static_cast<uint32_t>(sizeof(ValueType));  // NOLINT
   }
@@ skipping 665 matching lines @@
   }
 
   gpu::CommandHeader header;
 };
 
 COMPILE_ASSERT(sizeof(BlendBarrierKHR) == 4, Sizeof_BlendBarrierKHR_is_not_4);
 COMPILE_ASSERT(offsetof(BlendBarrierKHR, header) == 0,
                OffsetOf_BlendBarrierKHR_header_not_0);
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_AUTOGEN_H_