tracing: add dump provider for malloc heap profiler

base/trace_event/trace_log.cc

Index: base/trace_event/trace_log.cc
diff --git a/base/trace_event/trace_log.cc b/base/trace_event/trace_log.cc
index dcedb4477563028eb2510c4a1430800d35b5bcb5..3b1d2c9bb2f5dc5ca05100010a96ac6e07bdcfd5 100644
--- a/base/trace_event/trace_log.cc
+++ b/base/trace_event/trace_log.cc
@@ -1318,12 +1318,14 @@ TraceEventHandle TraceLog::AddTraceEventWithThreadIdAndTimestamp(
   if (!(flags & TRACE_EVENT_FLAG_COPY)) {
     if (AllocationContextTracker::capture_enabled()) {
       if (phase == TRACE_EVENT_PHASE_BEGIN ||
-          phase == TRACE_EVENT_PHASE_COMPLETE)
-        AllocationContextTracker::PushPseudoStackFrame(name);
-      else if (phase == TRACE_EVENT_PHASE_END)
+          phase == TRACE_EVENT_PHASE_COMPLETE) {
+        AllocationContextTracker::GetInstanceForCurrentThread()
+            ->PushPseudoStackFrame(name);
+      } else if (phase == TRACE_EVENT_PHASE_END)
         // The pop for |TRACE_EVENT_PHASE_COMPLETE| events
         // is in |TraceLog::UpdateTraceEventDuration|.
-        AllocationContextTracker::PopPseudoStackFrame(name);
+        AllocationContextTracker::GetInstanceForCurrentThread()
+            ->PopPseudoStackFrame(name);
     }
   }
 
@@ -1447,7 +1449,8 @@ void TraceLog::UpdateTraceEventDuration(
 
     if (base::trace_event::AllocationContextTracker::capture_enabled()) {
       // The corresponding push is in |AddTraceEventWithThreadIdAndTimestamp|.
-      base::trace_event::AllocationContextTracker::PopPseudoStackFrame(name);
+      base::trace_event::AllocationContextTracker::GetInstanceForCurrentThread()
+          ->PopPseudoStackFrame(name);
     }
   }