binding: Retires ExceptionState::throwIfNeeded().

third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequest.cpp

 /*
  *  Copyright (C) 2004, 2006, 2008 Apple Inc. All rights reserved.
  *  Copyright (C) 2005-2007 Alexey Proskuryakov <ap@webkit.org>
  *  Copyright (C) 2007, 2008 Julien Chaffraix <jchaffraix@webkit.org>
  *  Copyright (C) 2008, 2011 Google Inc. All rights reserved.
  *  Copyright (C) 2012 Intel Corporation
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
@@ skipping 613 matching lines @@
 bool XMLHttpRequest::initSend(ExceptionState& exceptionState)
 {
     if (!getExecutionContext())
         return false;
 
     if (m_state != kOpened || m_loader) {
         exceptionState.throwDOMException(InvalidStateError, "The object's state must be OPENED.");
         return false;
     }
 
-    if (!m_async && exceptionState.isolate() && v8::MicrotasksScope::IsRunningMicrotasks(exceptionState.isolate())) {
-        UseCounter::count(getExecutionContext(), UseCounter::During_Microtask_SyncXHR);
+    if (!m_async) {
+        v8::Isolate* isolate = v8::Isolate::GetCurrent();
+        if (isolate && v8::MicrotasksScope::IsRunningMicrotasks(isolate)) {
+            UseCounter::count(getExecutionContext(), UseCounter::During_Microtask_SyncXHR);
+        }
     }
 
-
     m_error = false;
     return true;
 }
 
 void XMLHttpRequest::send(const ArrayBufferOrArrayBufferViewOrBlobOrDocumentOrStringOrFormData& body, ExceptionState& exceptionState)
 {
     InspectorInstrumentation::willSendXMLHttpOrFetchNetworkRequest(getExecutionContext(), url());
 
     if (body.isNull()) {
         send(String(), exceptionState);
@@ skipping 1074 matching lines @@
     visitor->traceWrappers(m_responseDocument);
     visitor->traceWrappers(m_responseArrayBuffer);
 }
 
 std::ostream& operator<<(std::ostream& ostream, const XMLHttpRequest* xhr)
 {
     return ostream << "XMLHttpRequest " << static_cast<const void*>(xhr);
 }
 
 } // namespace blink