Indicate in the Window menu which Chrome window has an active sound playing

chrome/browser/ui/cocoa/browser_window_controller.mm

Index: chrome/browser/ui/cocoa/browser_window_controller.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.mm b/chrome/browser/ui/cocoa/browser_window_controller.mm
index 6249badd7ecd7afcaa690004463ea1efd5542bb9..ad203225feeb84c83244f3b952fcbffc1d2adf36 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller.mm
@@ -1895,6 +1895,15 @@ willAnimateFromState:(BookmarkBar::State)oldState
                                                  command.accelerator());
 }
 
+- (void)setMediaState:(TabMediaState)mediaState {
+  static_cast<BrowserWindowCocoa*>([self browserWindow])
+      ->UpdateMediaState(mediaState);
+}
+
+- (TabMediaState)mediaState {
+  return static_cast<BrowserWindowCocoa*>([self browserWindow])->media_state();
+}
+
 @end  // @implementation BrowserWindowController
 
 @implementation BrowserWindowController(Fullscreen)