bindings: Stop passing ExceptionState to callback function

third_party/WebKit/Source/core/timing/PerformanceObserver.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/timing/PerformanceObserver.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/PerformanceObserverCallback.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/timing/PerformanceBase.h"
@@ skipping 72 matching lines @@
 void PerformanceObserver::deliver() {
   ASSERT(!shouldBeSuspended());
 
   if (m_performanceEntries.isEmpty())
     return;
 
   PerformanceEntryVector performanceEntries;
   performanceEntries.swap(m_performanceEntries);
   PerformanceObserverEntryList* entryList =
       new PerformanceObserverEntryList(performanceEntries);
-  // TODO(bashi): Make sure that not throwing exception is OK.
-  TrackExceptionState exceptionState;
-
-  m_callback->call(m_scriptState.get(), this, exceptionState, entryList, this);
+  m_callback->call(m_scriptState.get(), this, entryList, this);
 }
 
 DEFINE_TRACE(PerformanceObserver) {
   visitor->trace(m_callback);
   visitor->trace(m_performance);
   visitor->trace(m_performanceEntries);
 }
 
 }  // namespace blink