[Startup Tracing] Hook up TraceConfig and remove CategoryFilter & TraceOptions

base/trace_event/trace_event_android.cc

Index: base/trace_event/trace_event_android.cc
diff --git a/base/trace_event/trace_event_android.cc b/base/trace_event/trace_event_android.cc
index 91ed6e3cf08f5c140c3b68b458ea5dbaf6eaa84d..465649d44d5acb5b4633ee6af72cf365148130f5 100644
--- a/base/trace_event/trace_event_android.cc
+++ b/base/trace_event/trace_event_android.cc
@@ -97,9 +97,9 @@ void TraceLog::StartATrace() {
     PLOG(WARNING) << "Couldn't open " << kATraceMarkerFile;
     return;
   }
-  SetEnabled(CategoryFilter(CategoryFilter::kDefaultCategoryFilterString),
-             TraceLog::RECORDING_MODE,
-             TraceOptions(RECORD_CONTINUOUSLY));
+  TraceConfig trace_config;

[dsinclair, 2015/06/02 13:56:55]

Should we set kDefaultCategoryFilterString here just to make it explicit?

[Zhen Wang, 2015/06/02 16:24:42]

We do not use kDefaultCategoryFilterString any more because we now use
TraceConfig::InitializeDefault() to initialize the default values.

+  trace_config.SetTraceRecordMode(RECORD_CONTINUOUSLY);
+  SetEnabled(trace_config, TraceLog::RECORDING_MODE);
 }
 
 void TraceLog::StopATrace() {