Hook up Android closed captions 'enabled' setting to Blink

Source/core/testing/InternalSettings.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 273 matching lines @@
     InternalSettingsGuardForSettings();
     settings()->setTextAutosizingEnabled(enabled);
 }
 
 void InternalSettings::setTextAutosizingWindowSizeOverride(int width, int height, ExceptionState& exceptionState)
 {
     InternalSettingsGuardForSettings();
     settings()->setTextAutosizingWindowSizeOverride(IntSize(width, height));
 }
 
+void InternalSettings::setTextTrackKindUserPreference(const String& preference, ExceptionState& exceptionState)
+{
+    InternalSettingsGuardForSettings();
+    String token = preference.stripWhiteSpace();
+    TextTrackKindUserPreference userPreference = TextTrackKindUserPreference::Default;
+    if (token == "default")
+        userPreference = TextTrackKindUserPreference::Default;
+    else if (token == "captions")
+        userPreference = TextTrackKindUserPreference::Captions;
+    else if (token == "subtitles")
+        userPreference = TextTrackKindUserPreference::Subtitles;
+    else
+        exceptionState.throwDOMException(SyntaxError, "The user preference for text track kind " + preference + ")' is invalid.");
+
+    settings()->setTextTrackKindUserPreference(userPreference);
+}
+
 void InternalSettings::setMediaTypeOverride(const String& mediaType, ExceptionState& exceptionState)
 {
     InternalSettingsGuardForSettings();
     settings()->setMediaTypeOverride(mediaType);
 }
 
 void InternalSettings::setAccessibilityFontScaleFactor(float fontScaleFactor, ExceptionState& exceptionState)
 {
     InternalSettingsGuardForSettings();
     settings()->setAccessibilityFontScaleFactor(fontScaleFactor);
@@ skipping 177 matching lines @@
     settings()->setLogDnsPrefetchAndPreconnect(enabled);
 }
 
 void InternalSettings::setPreloadLogging(bool enabled, ExceptionState& exceptionState)
 {
     InternalSettingsGuardForSettings();
     settings()->setLogPreload(enabled);
 }
 
 }