Expose APIs for text track settings

Source/core/testing/InternalSettings.h

Index: Source/core/testing/InternalSettings.h
diff --git a/Source/core/testing/InternalSettings.h b/Source/core/testing/InternalSettings.h
index b9b37afaa0610b928c831656827e91a364d01320..dfba97a973a900a67d7a06b478e5579a13e68484 100644
--- a/Source/core/testing/InternalSettings.h
+++ b/Source/core/testing/InternalSettings.h
@@ -133,6 +133,15 @@ public:
     void setPrimaryHoverType(const String&, ExceptionState&);
     void setDnsPrefetchLogging(bool, ExceptionState&);
 
+    void setTextTrackBackgroundColor(const String&, ExceptionState&);

[fs, 2015/02/17 09:43:47]

These should exist on InternalSettingsGenerated already (i.e. they are
autogenerated from Settings.in)

[srivats, 2015/02/18 01:46:52]

My bad! I was under the impression that this was required for the layout test.

+    void setTextTrackFontFamily(const String&, ExceptionState&);
+    void setTextTrackFontStyle(const String&, ExceptionState&);
+    void setTextTrackFontVariant(const String&, ExceptionState&);
+    void setTextTrackTextColor(const String&, ExceptionState&);
+    void setTextTrackTextShadow(const String&, ExceptionState&);
+    void setTextTrackTextSize(const String&, ExceptionState&);
+    void setTextTrackWindowColor(const String&, ExceptionState&);
+
 private:
     explicit InternalSettings(Page&);