Hook up Android closed captions 'enabled' setting to Blink

Source/core/frame/Settings.cpp

Index: Source/core/frame/Settings.cpp
diff --git a/Source/core/frame/Settings.cpp b/Source/core/frame/Settings.cpp
index f6a2781b36a86509f34490b3c69742480ae26f3c..6c85bb100ad9ab861a88043efdc83d1ffa3b5dea 100644
--- a/Source/core/frame/Settings.cpp
+++ b/Source/core/frame/Settings.cpp
@@ -72,6 +72,7 @@ Settings::Settings()
 #else
     , m_textAutosizingEnabled(false)
 #endif
+    , m_textTracksEnabled(false)
     SETTINGS_INITIALIZER_LIST
 {
 }
@@ -132,4 +133,12 @@ void Settings::setOpenGLMultisamplingEnabled(bool flag)
     invalidate(SettingsDelegate::MultisamplingChange);
 }
 
+void Settings::setTextTracksEnabled(bool enabled)
+{
+    if (m_textTracksEnabled == enabled)
+        return;
+    m_textTracksEnabled = enabled;
+    invalidate(SettingsDelegate::TextTracksVisibilityChange);
+}
+
 } // namespace blink