Remove TraceOptions string based constructor.

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 e3daa1a85dac01eef2262284fd6984ccc6139f70..fe13ff57dd08ca8d7038c7c38ad091bafa18e145 100644
--- a/components/tracing/child_trace_message_filter.cc
+++ b/components/tracing/child_trace_message_filter.cc
@@ -59,11 +59,12 @@ void ChildTraceMessageFilter::OnBeginTracing(
       browser_time;
   TraceLog::GetInstance()->SetTimeOffset(time_offset);
 #endif
-
+  base::debug::TraceOptions trace_options;
+  trace_options.SetFromString(options);
   TraceLog::GetInstance()->SetEnabled(
       base::debug::CategoryFilter(category_filter_str),
       base::debug::TraceLog::RECORDING_MODE,
-      base::debug::TraceOptions(options));
+      trace_options);
 }
 
 void ChildTraceMessageFilter::OnEndTracing() {
@@ -81,10 +82,12 @@ void ChildTraceMessageFilter::OnEnableMonitoring(
     const std::string& category_filter_str,
     base::TimeTicks browser_time,
     const std::string& options) {
+  base::debug::TraceOptions trace_options;
+  trace_options.SetFromString(options);
   TraceLog::GetInstance()->SetEnabled(
       base::debug::CategoryFilter(category_filter_str),
       base::debug::TraceLog::MONITORING_MODE,
-      base::debug::TraceOptions(options));
+      trace_options);
 }
 
 void ChildTraceMessageFilter::OnDisableMonitoring() {