Fix cue rendering test and include support for left/right alignment.

Source/core/html/track/TextTrackCue.h

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 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 137 matching lines @@
     void removeDisplayTree();
     void markFutureAndPastNodes(ContainerNode*, double, double);
 
     int calculateComputedLinePosition();
 
     virtual const AtomicString& interfaceName() const;
     virtual ScriptExecutionContext* scriptExecutionContext() const;
 
     std::pair<double, double> getCSSPosition() const;
 
+    CSSValueID getCSSAlignment() const;
     int getCSSSize() const;
     CSSValueID getCSSWritingDirection() const;
     CSSValueID getCSSWritingMode() const;
 
     enum WritingDirection {
         Horizontal,
         VerticalGrowingLeft,
         VerticalGrowingRight,
         NumberOfWritingDirections
     };
     WritingDirection getWritingDirection() const { return m_writingDirection; }
 
     enum CueAlignment {
         Start,
         Middle,
-        End
+        End,
+        Left,
+        Right,
+        NumberOfAlignments
     };
     CueAlignment getAlignment() const { return m_cueAlignment; }
 
     virtual void videoSizeDidChange(const IntSize&) { }
 
     virtual bool operator==(const TextTrackCue&) const;
     virtual bool operator!=(const TextTrackCue& cue) const
     {
         return !(*this == cue);
     }
@@ skipping 78 matching lines @@
     RefPtr<HTMLDivElement> m_cueBackgroundBox;
 
     bool m_displayTreeShouldChange;
     RefPtr<TextTrackCueBox> m_displayTree;
 
     CSSValueID m_displayDirection;
 
     CSSValueID m_displayWritingModeMap[NumberOfWritingDirections];
     CSSValueID m_displayWritingMode;
 
+    CSSValueID m_displayAlignmentMap[NumberOfAlignments];

[acolwell GONE FROM CHROMIUM, 2013/10/04 17:26:41]

nit: You should be able to make this static const since CSSValueID is a simple
type. I believe this should work for m_displayWritingModeMap as well.

[vcarbune.chromium, 2013/10/07 09:37:28]

Nice catch. Done.

+
     int m_displaySize;
 
     std::pair<float, float> m_displayPosition;
 #if ENABLE(WEBVTT_REGIONS)
     String m_regionId;
 #endif
 };
 
 } // namespace WebCore
 
 #endif