Perform full gcs when context disposals happen too frequent.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 528ef4d517e2d5536f639418aeec85ab30137f16..07361040922fce1eba0f6be29efa9b680587b301 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -754,7 +754,7 @@ class Heap {
   bool IsHeapIterable();
 
   // Notify the heap that a context has been disposed.
-  int NotifyContextDisposed();
+  void NotifyContextDisposed();
 
   inline void increment_scan_on_scavenge_pages() {
     scan_on_scavenge_pages_++;
@@ -1462,13 +1462,16 @@ class Heap {
 
   int always_allocate_scope_depth_;
 
-  // For keeping track of context disposals.
-  int contexts_disposed_;
-
   int global_ic_age_;
 
   bool flush_monomorphic_ics_;
 
+  // If context disposals happen at a high rate, we do a full gc in between
+  // context disposal.
+  // TODO(hpayer): We should get rid of that mode.
+  static const int kNotifyContextDisposedFullGCLimitInMS = 1000;
+  double last_notify_context_disposed_;
+
   int scan_on_scavenge_pages_;
 
   NewSpace new_space_;