Simplify allocation tracker API

src/heap-profiler.h

Index: src/heap-profiler.h
diff --git a/src/heap-profiler.h b/src/heap-profiler.h
index 866a6780028e17e0355e3c4cdfd21efd20c158fa..13e605b12d38da21964cd6ff3459178cbf2aabe2 100644
--- a/src/heap-profiler.h
+++ b/src/heap-profiler.h
@@ -53,7 +53,7 @@ class HeapProfiler {
       v8::ActivityControl* control,
       v8::HeapProfiler::ObjectNameResolver* resolver);
 
-  void StartHeapObjectsTracking();
+  void StartHeapObjectsTracking(bool track_allocations);
   void StopHeapObjectsTracking();
 
   SnapshotObjectId PushHeapObjectsStats(OutputStream* stream);
@@ -78,9 +78,6 @@ class HeapProfiler {
   bool is_tracking_object_moves() const { return is_tracking_object_moves_; }
   bool is_tracking_allocations() const { return is_tracking_allocations_; }
 
-  void StartHeapAllocationsRecording();
-  void StopHeapAllocationsRecording();
-
   int FindUntrackedObjects() {
     return snapshots_->FindUntrackedObjects();
   }