Expose APIs for text track settings

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

Index: Source/core/html/track/vtt/VTTCue.cpp
diff --git a/Source/core/html/track/vtt/VTTCue.cpp b/Source/core/html/track/vtt/VTTCue.cpp
index 03339999edfbd5bf8c3e29076b99454fef831d41..d5ec6015035f0aac1641369f3c3e1267c7bdeb88 100644
--- a/Source/core/html/track/vtt/VTTCue.cpp
+++ b/Source/core/html/track/vtt/VTTCue.cpp
@@ -38,6 +38,7 @@
 #include "core/dom/DocumentFragment.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/events/Event.h"
+#include "core/frame/Settings.h"
 #include "core/frame/UseCounter.h"
 #include "core/html/HTMLDivElement.h"
 #include "core/html/track/TextTrack.h"
@@ -204,6 +205,19 @@ void VTTCueBox::applyCSSProperties(const VTTDisplayParameters& displayParameters
 
         setInlineStyleProperty(CSSPropertyWhiteSpace, CSSValuePre);
     }
+
+    Settings* settings = m_cue->element()->document().settings();
+    if (settings) {
+        m_cue->element()->setInlineStyleProperty(CSSPropertyBackgroundColor, settings->textTrackBackgroundColor(), true);
+        m_cue->element()->setInlineStyleProperty(CSSPropertyFontFamily, settings->textTrackFontFamily(), true);
+        m_cue->element()->setInlineStyleProperty(CSSPropertyFontStyle, settings->textTrackFontStyle(), true);
+        m_cue->element()->setInlineStyleProperty(CSSPropertyFontVariant, settings->textTrackFontVariant(), true);
+        m_cue->element()->setInlineStyleProperty(CSSPropertyColor, settings->textTrackTextColor(), true);
+        m_cue->element()->setInlineStyleProperty(CSSPropertyTextShadow, settings->textTrackTextShadow(), true);
+        m_cue->element()->setInlineStyleProperty(CSSPropertyFontSize, settings->textTrackTextSize(), true);
+        // Override background color for the cue box
+        setInlineStyleProperty(CSSPropertyBackgroundColor, settings->textTrackWindowColor(), true);
+    }
 }
 
 LayoutObject* VTTCueBox::createRenderer(const LayoutStyle&)