Media indicator for background recording task

ash/media_delegate.h

Index: ash/media_delegate.h
diff --git a/ash/media_delegate.h b/ash/media_delegate.h
index 1dac0592548b8918c6f3ea9be96d7a2a18caa038..4ea9a17a04807993c9bf5b566772e45242d42155 100644
--- a/ash/media_delegate.h
+++ b/ash/media_delegate.h
@@ -5,8 +5,19 @@
 #ifndef ASH_MEDIA_DELEGATE_H_
 #define ASH_MEDIA_DELEGATE_H_
 
+namespace content {
+class BrowserContext;
+}
+
 namespace ash {
 
+enum MediaCaptureState {
+  MEDIA_CAPTURE_NONE = 0,
+  MEDIA_CAPTURE_AUDIO = 1 << 0,
+  MEDIA_CAPTURE_VIDEO = 1 << 1,
+  MEDIA_CAPTURE_AUDIO_VIDEO = MEDIA_CAPTURE_AUDIO | MEDIA_CAPTURE_VIDEO,
+};
+
 // A delegate class to control media playback.
 class MediaDelegate {
  public:
@@ -20,6 +31,11 @@ class MediaDelegate {
 
   // Handles the Previous Track Media shortcut key.
   virtual void HandleMediaPrevTrack() = 0;
+
+  // Returns the current media recording state of web contents
+  // that belongs to the |context|.
+  virtual MediaCaptureState GetMediaCaptureState(
+      content::BrowserContext* context) = 0;
 };
 
 }  // namespace ash