Trace category groups and category filter.

components/tracing/child_trace_message_filter.cc

Index: components/tracing/child_trace_message_filter.cc
diff --git a/components/tracing/child_trace_message_filter.cc b/components/tracing/child_trace_message_filter.cc
index 161c778c450ff827243d70cbecc4002ca4c6fd55..65ddd4e7142870229984060d78333094972d8e06 100644
--- a/components/tracing/child_trace_message_filter.cc
+++ b/components/tracing/child_trace_message_filter.cc
@@ -46,8 +46,8 @@ bool ChildTraceMessageFilter::OnMessageReceived(const IPC::Message& message) {
 ChildTraceMessageFilter::~ChildTraceMessageFilter() {}
 
 void ChildTraceMessageFilter::OnBeginTracing(
-    const std::vector<std::string>& included_categories,
-    const std::vector<std::string>& excluded_categories,
+    const std::vector<std::string>& included_tag_patterns,
+    const std::vector<std::string>& excluded_tag_patterns,
     base::TimeTicks browser_time) {
 #if defined(__native_client__)
   // NaCl and system times are offset by a bit, so subtract some time from
@@ -57,8 +57,8 @@ void ChildTraceMessageFilter::OnBeginTracing(
       browser_time;
   TraceLog::GetInstance()->SetTimeOffset(time_offset);
 #endif
-  TraceLog::GetInstance()->SetEnabled(included_categories,
-                                      excluded_categories);
+  TraceLog::GetInstance()->SetEnabled(included_tag_patterns,
+                                      excluded_tag_patterns);
 }
 
 void ChildTraceMessageFilter::OnEndTracing() {