Really fix missing HandleScope to prevent local handles to DOMWindow leaking.

src/profile-generator.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2452 matching lines @@
   int count() { return objects_.length(); }
   Handle<JSGlobalObject>& at(int i) { return objects_[i]; }
 
  private:
   List<Handle<JSGlobalObject> > objects_;
 };
 
 
 // Modifies heap. Must not be run during heap traversal.
 void V8HeapExplorer::TagGlobalObjects() {
+  HandleScope scope;
   Isolate* isolate = Isolate::Current();
   GlobalObjectsEnumerator enumerator;
   isolate->global_handles()->IterateAllRoots(&enumerator);
-  HandleScope scope;
   Handle<String> document_string =
       isolate->factory()->NewStringFromAscii(CStrVector("document"));
   Handle<String> url_string =
       isolate->factory()->NewStringFromAscii(CStrVector("URL"));
   const char** urls = NewArray<const char*>(enumerator.count());
   for (int i = 0, l = enumerator.count(); i < l; ++i) {
     urls[i] = NULL;
     HandleScope scope;
     Handle<JSGlobalObject> global_obj = enumerator.at(i);
     Object* obj_document;
@@ skipping 956 matching lines @@
 
 
 void HeapSnapshotJSONSerializer::SortHashMap(
     HashMap* map, List<HashMap::Entry*>* sorted_entries) {
   for (HashMap::Entry* p = map->Start(); p != NULL; p = map->Next(p))
     sorted_entries->Add(p);
   sorted_entries->Sort(SortUsingEntryValue);
 }
 
 } }  // namespace v8::internal