Remove NoExceptionStateAssertionChecker

third_party/WebKit/Source/core/html/track/TextTrack.cpp

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2011, 2012, 2013 Apple 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.
@@ skipping 14 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/html/track/TextTrack.h"
 
 #include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/track/CueTimeline.h"
 #include "core/html/track/TextTrackCueList.h"
 #include "core/html/track/TextTrackList.h"
 #include "core/html/track/vtt/VTTRegion.h"
 #include "core/html/track/vtt/VTTRegionList.h"
 #include "platform/RuntimeEnabledFeatures.h"
 
 namespace blink {
@@ skipping 407 matching lines @@
   visitor->trace(m_trackList);
   TrackBase::trace(visitor);
   EventTargetWithInlineData::trace(visitor);
 }
 
 DEFINE_TRACE_WRAPPERS(TextTrack) {
   visitor->traceWrappers(m_cues);
   EventTargetWithInlineData::traceWrappers(visitor);
 }
 }  // namespace blink