Remove calls to HandleScope default ctor.

Source/bindings/v8/V8CustomElementLifecycleCallbacks.cpp

 /*
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 107 matching lines @@
         return 0;
 
     return V8PerContextData::from(context);
 }
 
 V8CustomElementLifecycleCallbacks::~V8CustomElementLifecycleCallbacks()
 {
     if (!m_owner)
         return;
 
-    v8::HandleScope handleScope;
+    v8::HandleScope handleScope(getIsolateFromScriptExecutionContext(scriptExecutionContext()));
     if (V8PerContextData* perContextData = creationContextData())
         perContextData->clearCustomElementBinding(m_owner);
 }
 
 bool V8CustomElementLifecycleCallbacks::setBinding(CustomElementDefinition* owner, PassOwnPtr<CustomElementBinding> binding)
 {
     ASSERT(!m_owner);
 
     V8PerContextData* perContextData = creationContextData();
     if (!perContextData)
         return false;
 
     m_owner = owner;
 
     // Bindings retrieve the prototype when needed from per-context data.
     perContextData->addCustomElementBinding(owner, binding);
 
     return true;
 }
 
 void V8CustomElementLifecycleCallbacks::created(Element* element)
 {
     if (!canInvokeCallback())
         return;
 
     element->setCustomElementState(Element::Upgraded);
 
-    v8::HandleScope handleScope;
+    v8::Isolate* isolate = getIsolateFromScriptExecutionContext(scriptExecutionContext());
+    v8::HandleScope handleScope(isolate);
     v8::Handle<v8::Context> context = toV8Context(scriptExecutionContext(), m_world.get());
     if (context.IsEmpty())
         return;
 
     v8::Context::Scope scope(context);
-    v8::Isolate* isolate = context->GetIsolate();
 
     v8::Handle<v8::Object> receiver = DOMDataStore::current(isolate)->get<V8Element>(element, isolate);
     if (!receiver.IsEmpty()) {
         // Swizzle the prototype of the existing wrapper. We don't need to
         // worry about non-existent wrappers; they will get the right
         // prototype when wrapped.
         v8::Handle<v8::Object> prototype = m_prototype.newLocal(isolate);
         if (prototype.IsEmpty())
             return;
         receiver->SetPrototype(prototype);
@@ skipping 21 matching lines @@
 void V8CustomElementLifecycleCallbacks::leftDocument(Element* element)
 {
     call(m_leftDocument, element);
 }
 
 void V8CustomElementLifecycleCallbacks::attributeChanged(Element* element, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue)
 {
     if (!canInvokeCallback())
         return;
 
-    v8::HandleScope handleScope;
+    v8::Isolate* isolate = getIsolateFromScriptExecutionContext(scriptExecutionContext());
+    v8::HandleScope handleScope(isolate);
     v8::Handle<v8::Context> context = toV8Context(scriptExecutionContext(), m_world.get());
     if (context.IsEmpty())
         return;
 
     v8::Context::Scope scope(context);
-    v8::Isolate* isolate = context->GetIsolate();
 
     v8::Handle<v8::Object> receiver = toV8(element, context->Global(), isolate).As<v8::Object>();
     ASSERT(!receiver.IsEmpty());
 
     v8::Handle<v8::Function> callback = m_attributeChanged.newLocal(isolate);
     if (callback.IsEmpty())
         return;
 
     v8::Handle<v8::Value> argv[] = {
         v8String(name, isolate),
         oldValue.isNull() ? v8::Handle<v8::Value>(v8::Null()) : v8::Handle<v8::Value>(v8String(oldValue, isolate)),
         newValue.isNull() ? v8::Handle<v8::Value>(v8::Null()) : v8::Handle<v8::Value>(v8String(newValue, isolate))
     };
 
     v8::TryCatch exceptionCatcher;
     exceptionCatcher.SetVerbose(true);
     ScriptController::callFunctionWithInstrumentation(scriptExecutionContext(), callback, receiver, WTF_ARRAY_LENGTH(argv), argv);
 }
 
 void V8CustomElementLifecycleCallbacks::call(const ScopedPersistent<v8::Function>& weakCallback, Element* element)
 {
     if (!canInvokeCallback())
         return;
 
-    v8::HandleScope handleScope;
+    v8::HandleScope handleScope(getIsolateFromScriptExecutionContext(scriptExecutionContext()));
     v8::Handle<v8::Context> context = toV8Context(scriptExecutionContext(), m_world.get());
     if (context.IsEmpty())
         return;
 
     v8::Context::Scope scope(context);
     v8::Isolate* isolate = context->GetIsolate();
 
     v8::Handle<v8::Function> callback = weakCallback.newLocal(isolate);
     if (callback.IsEmpty())
         return;
 
     v8::Handle<v8::Object> receiver = toV8(element, context->Global(), isolate).As<v8::Object>();
     ASSERT(!receiver.IsEmpty());
 
     v8::TryCatch exceptionCatcher;
     exceptionCatcher.SetVerbose(true);
     ScriptController::callFunctionWithInstrumentation(scriptExecutionContext(), callback, receiver, 0, 0);
 }
 
 } // namespace WebCore