Don't use StaticMemorySingletonTraits for TraceLog.

base/debug/trace_event_impl.cc

Index: base/debug/trace_event_impl.cc
===================================================================
--- base/debug/trace_event_impl.cc	(revision 210376)
+++ base/debug/trace_event_impl.cc	(working copy)
@@ -36,7 +36,7 @@
  public:
   static void Delete() {
     Singleton<base::debug::TraceLog,
-              StaticMemorySingletonTraits<base::debug::TraceLog> >::OnExit(0);
+              LeakySingletonTraits<base::debug::TraceLog> >::OnExit(0);
   }
 };
 
@@ -743,7 +743,7 @@
 
 // static
 TraceLog* TraceLog::GetInstance() {
-  return Singleton<TraceLog, StaticMemorySingletonTraits<TraceLog> >::get();
+  return Singleton<TraceLog, LeakySingletonTraits<TraceLog> >::get();
 }
 
 // static
@@ -775,6 +775,7 @@
 TraceLog::TraceLog()
     : enable_count_(0),
       num_traces_recorded_(0),
+      event_callback_(NULL),
       dispatching_to_observer_list_(false),
       watch_category_(NULL),
       trace_options_(RECORD_UNTIL_FULL),
@@ -1325,10 +1326,6 @@
   DeleteTraceLogForTesting::Delete();
 }
 
-void TraceLog::Resurrect() {
-  StaticMemorySingletonTraits<TraceLog>::Resurrect();
-}
-
 void TraceLog::SetProcessID(int process_id) {
   process_id_ = process_id;
   // Create a FNV hash from the process ID for XORing.