[Tracing] Remove context_id in favor of traits

base/trace_event/trace_log.h

 // Copyright 2015 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 BASE_TRACE_EVENT_TRACE_LOG_H_
 #define BASE_TRACE_EVENT_TRACE_LOG_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 172 matching lines @@
       char phase,
       const unsigned char* category_group_enabled,
       const char* name,
       unsigned long long id,
       int num_args,
       const char** arg_names,
       const unsigned char* arg_types,
       const unsigned long long* arg_values,
       const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
       unsigned int flags);
-  TraceEventHandle AddTraceEventWithContextId(
+  TraceEventHandle AddTraceEventWithBindId(
       char phase,
       const unsigned char* category_group_enabled,
       const char* name,
       unsigned long long id,
-      unsigned long long context_id,
+      unsigned long long bind_id,
       int num_args,
       const char** arg_names,
       const unsigned char* arg_types,
       const unsigned long long* arg_values,
       const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
       unsigned int flags);
   TraceEventHandle AddTraceEventWithProcessId(
       char phase,
       const unsigned char* category_group_enabled,
       const char* name,
       unsigned long long id,
       int process_id,
       int num_args,
       const char** arg_names,
       const unsigned char* arg_types,
       const unsigned long long* arg_values,
       const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
       unsigned int flags);
   TraceEventHandle AddTraceEventWithThreadIdAndTimestamp(
       char phase,
       const unsigned char* category_group_enabled,
       const char* name,
       unsigned long long id,
-      unsigned long long context_id,
       int thread_id,
       const TimeTicks& timestamp,
       int num_args,
       const char** arg_names,
       const unsigned char* arg_types,
       const unsigned long long* arg_values,
       const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
       unsigned int flags);
   TraceEventHandle AddTraceEventWithThreadIdAndTimestamp(
       char phase,
       const unsigned char* category_group_enabled,
       const char* name,
       unsigned long long id,
-      unsigned long long context_id,
       unsigned long long bind_id,
       int thread_id,
       const TimeTicks& timestamp,
       int num_args,
       const char** arg_names,
       const unsigned char* arg_types,
       const unsigned long long* arg_values,
       const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
       unsigned int flags);
 
@@ skipping 244 matching lines @@
   subtle::AtomicWord generation_;
   bool use_worker_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(TraceLog);
 };
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_TRACE_LOG_H_