Store Object.observe state per-isolate rather than per-context

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index b0a6b5e81427e1588a89f1c269a2b1e90c78f98b..71b229ebe2cf5eb0c2e7af333f7ac8126624743c 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -13222,6 +13222,52 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_HaveSameMap) {
   return isolate->heap()->ToBoolean(obj1->map() == obj2->map());
 }
 
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_GetObjectObservationState) {
+  ASSERT(args.length() == 0);
+  return isolate->heap()->object_observation_state();
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateObjectHashTable) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 0);
+  Handle<ObjectHashTable> table = isolate->factory()->NewObjectHashTable(0);
+  return *table;
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_ObjectHashTableGet) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 2);
+  CONVERT_ARG_HANDLE_CHECKED(ObjectHashTable, table, 0);
+  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, key, 1);
+  Handle<Object> lookup(table->Lookup(*key));
+  return lookup->IsTheHole() ? isolate->heap()->undefined_value() : *lookup;
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_ObjectHashTableSet) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 3);
+  CONVERT_ARG_HANDLE_CHECKED(ObjectHashTable, table, 0);
+  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, key, 1);
+  Handle<Object> value(args[2]);
+  PutIntoObjectHashTable(table, key, value);
+  return isolate->heap()->undefined_value();
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_ObjectHashTableHas) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 2);
+  CONVERT_ARG_HANDLE_CHECKED(ObjectHashTable, table, 0);
+  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, key, 1);
+  Handle<Object> lookup(table->Lookup(*key));
+  return isolate->heap()->ToBoolean(!lookup->IsTheHole());
+}
+
+
 // ----------------------------------------------------------------------------
 // Implementation of Runtime