Use "int" instead of "long" for bindings where the WebIDL uses "long".

Source/core/html/track/TextTrackRegion.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 36 matching lines @@
 
 namespace WebCore {
 
 // The following values default values are defined within the WebVTT Regions Spec.
 // https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/region.html
 
 // The region occupies by default 100% of the width of the video viewport.
 static const float defaultWidth = 100;
 
 // The region has, by default, 3 lines of text.
-static const long defaultHeightInLines = 3;
+static const int defaultHeightInLines = 3;
 
 // The region and viewport are anchored in the bottom left corner.
 static const float defaultAnchorPointX = 0;
 static const float defaultAnchorPointY = 100;
 
 // The region doesn't have scrolling text, by default.
 static const bool defaultScroll = false;
 
 // Default region line-height (vh units)
 static const float lineHeight = 5.33;
@@ skipping 39 matching lines @@
     }
 
     if (value < 0 || value > 100) {
         ec = IndexSizeError;
         return;
     }
 
     m_width = value;
 }
 
-void TextTrackRegion::setHeight(long value, ExceptionCode& ec)
+void TextTrackRegion::setHeight(int value, ExceptionCode& ec)
 {
     if (value < 0) {
         ec = IndexSizeError;
         return;
     }
 
     m_heightInLines = value;
 }
 
 void TextTrackRegion::setRegionAnchorX(double value, ExceptionCode& ec)
@@ skipping 369 matching lines @@
 {
     LOG(Media, "TextTrackRegion::scrollTimerFired");
 
     stopTimer();
     displayLastTextTrackCueBox();
 }
 
 } // namespace WebCore
 
 #endif