New heap profiler: add support for progress reporting and control.

src/heap-profiler.h

Index: src/heap-profiler.h
diff --git a/src/heap-profiler.h b/src/heap-profiler.h
index 2ef081ee29973b4572932517674f9179a17732cf..31d0aff02f80b9e2f6fee73aed590b5e4c1d4657 100644
--- a/src/heap-profiler.h
+++ b/src/heap-profiler.h
@@ -56,8 +56,12 @@ class HeapProfiler {
   static void TearDown();
 
 #ifdef ENABLE_LOGGING_AND_PROFILING
-  static HeapSnapshot* TakeSnapshot(const char* name, int type);
-  static HeapSnapshot* TakeSnapshot(String* name, int type);
+  static HeapSnapshot* TakeSnapshot(const char* name,
+                                    int type,
+                                    v8::ActivityControl* control);
+  static HeapSnapshot* TakeSnapshot(String* name,
+                                    int type,
+                                    v8::ActivityControl* control);
   static int GetSnapshotsCount();
   static HeapSnapshot* GetSnapshot(int index);
   static HeapSnapshot* FindSnapshot(unsigned uid);
@@ -75,8 +79,12 @@ class HeapProfiler {
  private:
   HeapProfiler();
   ~HeapProfiler();
-  HeapSnapshot* TakeSnapshotImpl(const char* name, int type);
-  HeapSnapshot* TakeSnapshotImpl(String* name, int type);
+  HeapSnapshot* TakeSnapshotImpl(const char* name,
+                                 int type,
+                                 v8::ActivityControl* control);
+  HeapSnapshot* TakeSnapshotImpl(String* name,
+                                 int type,
+                                 v8::ActivityControl* control);
 
   HeapSnapshotsCollection* snapshots_;
   unsigned next_snapshot_uid_;