Fix various places which do not check if SetProperty threw an exception.

src/handles.cc

 // Copyright 2009 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 272 matching lines @@
 Handle<Object> SetLocalPropertyIgnoreAttributes(
     Handle<JSObject> object,
     Handle<String> key,
     Handle<Object> value,
     PropertyAttributes attributes) {
   CALL_HEAP_FUNCTION(object->
       SetLocalPropertyIgnoreAttributes(*key, *value, attributes), Object);
 }
 
 
+void SetLocalPropertyNoThrow(Handle<JSObject> object,
+                             Handle<String> key,
+                             Handle<Object> value,
+                             PropertyAttributes attributes) {
+  ASSERT(!Top::has_pending_exception());
+  CHECK(!SetLocalPropertyIgnoreAttributes(
+        object, key, value, attributes).is_null());
+  CHECK(!Top::has_pending_exception());
+}
+
+
 Handle<Object> SetPropertyWithInterceptor(Handle<JSObject> object,
                                           Handle<String> key,
                                           Handle<Object> value,
                                           PropertyAttributes attributes) {
   CALL_HEAP_FUNCTION(object->SetPropertyWithInterceptor(*key,
                                                         *value,
                                                         attributes),
                      Object);
 }
 
@@ skipping 589 matching lines @@
 
 OptimizedObjectForAddingMultipleProperties::
 ~OptimizedObjectForAddingMultipleProperties() {
   // Reoptimize the object to allow fast property access.
   if (has_been_transformed_) {
     TransformToFastProperties(object_, unused_property_fields_);
   }
 }
 
 } }  // namespace v8::internal