[Android] A prototype of the interactive media notification.

content/public/browser/web_contents_delegate.h

Index: content/public/browser/web_contents_delegate.h
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index f191672c9d9c21b3a98b07dc9bbd5e967c8b3dec..abe97feb53b2f8dc3af2e9f2e703386ca6a6d08d 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -404,6 +404,14 @@ class CONTENT_EXPORT WebContentsDelegate {
                                    int version,
                                    const std::vector<gfx::RectF>& rects,
                                    const gfx::RectF& active_rect) {}
+
+  // Requests the tab to show media controls to manipulate the active media
+  // session.
+  virtual void ShowMediaControls(WebContents* web_contents) {}
+
+  // Requests the tab to hide media controls as the media session became
+  // inactive.
+  virtual void HideMediaControls(WebContents* web_contents) {}
 #endif
 
   // Invoked when the preferred size of the contents has been changed.