chrome/blink: Add functionality for in-product help for media elements.

third_party/WebKit/Source/core/exported/WebSettingsImpl.h

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 184 matching lines @@
   void SetViewportMetaLayoutSizeQuirk(bool) override;
   void SetViewportMetaMergeContentQuirk(bool) override;
   void SetViewportMetaNonUserScalableQuirk(bool) override;
   void SetViewportMetaZeroValuesQuirk(bool) override;
   void SetWebGLErrorsToConsoleEnabled(bool) override;
   void SetWebSecurityEnabled(bool) override;
   void SetWideViewportQuirkEnabled(bool) override;
   void SetXSSAuditorEnabled(bool) override;
   void SetMediaControlsEnabled(bool) override;
   void SetDoNotUpdateSelectionOnMutatingSelectionRange(bool) override;
+  void SetMediaDownloadInProductHelpEnabled(bool) override;
 
   bool ShowFPSCounter() const { return show_fps_counter_; }
   bool ShowPaintRects() const { return show_paint_rects_; }
   bool RenderVSyncNotificationEnabled() const {
     return render_v_sync_notification_enabled_;
   }
   bool AutoZoomFocusedNodeToLegibleScale() const {
     return auto_zoom_focused_node_to_legible_scale_;
   }
   bool DoubleTapToZoomEnabled() const;
@@ skipping 35 matching lines @@
   bool viewport_meta_non_user_scalable_quirk_;
   // This quirk is to maintain compatibility with Android apps built on
   // the Android SDK prior to and including version 18. Presumably, this
   // can be removed any time after 2015. See http://crbug.com/313754.
   bool clobber_user_agent_initial_scale_quirk_;
 };
 
 }  // namespace blink
 
 #endif