Expose text track settings in Content and implement for Android

content/browser/android/content_view_core_impl.h

Index: content/browser/android/content_view_core_impl.h
diff --git a/content/browser/android/content_view_core_impl.h b/content/browser/android/content_view_core_impl.h
index 701fa699da815177fcda5aa8bd30f0b559495a68..f4dd56f2ee2025df1a506642b79b762067f5aaab 100644
--- a/content/browser/android/content_view_core_impl.h
+++ b/content/browser/android/content_view_core_impl.h
@@ -171,6 +171,16 @@ class ContentViewCoreImpl : public ContentViewCore,
 
   void SetAccessibilityEnabled(JNIEnv* env, jobject obj, bool enabled);
 
+  void SetTextTrackSettings(JNIEnv* env,
+                            jobject obj,
+                            jstring textTrackBackgroundColor,
+                            jstring textTrackFontFamily,
+                            jstring textTrackFontStyle,
+                            jstring textTrackFontVariant,
+                            jstring textTrackTextColor,
+                            jstring textTrackTextShadow,
+                            jstring textTrackTextSize);
+
   void ExtractSmartClipData(JNIEnv* env,
                             jobject obj,
                             jint x,