Attempt to collect more garbage before panicking with out of memory.

src/global-handles.cc

Index: src/global-handles.cc
diff --git a/src/global-handles.cc b/src/global-handles.cc
index f089b85e1ab75f018f2cba05662e606222c6bef1..a909caf3de2449421252948ced2f11874abbd52e 100644
--- a/src/global-handles.cc
+++ b/src/global-handles.cc
@@ -372,13 +372,14 @@ void GlobalHandles::IdentifyWeakHandles(WeakSlotCallback f) {
 
 int post_gc_processing_count = 0;
 
-void GlobalHandles::PostGarbageCollectionProcessing() {
+bool GlobalHandles::PostGarbageCollectionProcessing() {
   // Process weak global handle callbacks. This must be done after the
   // GC is completely done, because the callbacks may invoke arbitrary
   // API functions.
   // At the same time deallocate all DESTROYED nodes.
   ASSERT(Heap::gc_state() == Heap::NOT_IN_GC);
   const int initial_post_gc_processing_count = ++post_gc_processing_count;
+  bool weak_callback_invoked = false;
   Node** p = &head_;
   while (*p != NULL) {
     if ((*p)->PostGarbageCollectionProcessing()) {
@@ -389,6 +390,7 @@ void GlobalHandles::PostGarbageCollectionProcessing() {
         // restart the processing).
         break;
       }
+      weak_callback_invoked = true;
     }
     if ((*p)->state_ == Node::DESTROYED) {
       // Delete the link.
@@ -407,6 +409,7 @@ void GlobalHandles::PostGarbageCollectionProcessing() {
   if (first_deallocated()) {
     first_deallocated()->set_next(head());
   }
+  return weak_callback_invoked;
 }