Expose APIs for text track settings

Source/core/html/track/vtt/VTTCue.h

Index: Source/core/html/track/vtt/VTTCue.h
diff --git a/Source/core/html/track/vtt/VTTCue.h b/Source/core/html/track/vtt/VTTCue.h
index b93cb2daaff4371eaa8b24ad479903acd582c24e..d66e21312aa3f2aa20a4066b43e239dc795ba167 100644
--- a/Source/core/html/track/vtt/VTTCue.h
+++ b/Source/core/html/track/vtt/VTTCue.h
@@ -142,6 +142,9 @@ public:
 
     DECLARE_VIRTUAL_TRACE();
 
+    // Applies CSS properties retrieved from settings on text tracks elements.

[philipj_slow, 2015/03/26 05:24:36]

"from settings on text track elements" sounds like it might be attributes on
<track> elements or something. Maybe "Applies CSS override style from user
settings." or similar?

Also put this directly following applyCSSProperties in both header and
implementation, they fit together.

[srivats, 2015/03/26 06:37:46]

Done
applyCSSProperties belongs to VTTCueBox and applyUserOverrideCSSProperties
belongs to VTTCue.

+    void applyUserOverrideCSSProperties();
+
 private:
     VTTCue(Document&, double startTime, double endTime, const String& text);