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..2e62b7e9992496d72b886ab7fba8e6691947f6d4 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller.mm
@@ -1895,6 +1895,11 @@ willAnimateFromState:(BookmarkBar::State)oldState
                                                  command.accelerator());
 }
 
+- (void)setMediaState:(TabMediaState)mediaState {
+  static_cast<BrowserWindowCocoa*>([self browserWindow])->
+                  UpdateMediaState(mediaState);
+}
+
 @end  // @implementation BrowserWindowController
 
 @implementation BrowserWindowController(Fullscreen)