[Mac] Implement an active state for the avatar button

chrome/browser/ui/cocoa/profiles/avatar_button_controller.h

Index: chrome/browser/ui/cocoa/profiles/avatar_button_controller.h
diff --git a/chrome/browser/ui/cocoa/profiles/avatar_button_controller.h b/chrome/browser/ui/cocoa/profiles/avatar_button_controller.h
index 8594029aa1f0250024fb4673ccc2597972f3c661..51a349ef96a09115321daabaa41953c556b3aa34 100644
--- a/chrome/browser/ui/cocoa/profiles/avatar_button_controller.h
+++ b/chrome/browser/ui/cocoa/profiles/avatar_button_controller.h
@@ -24,6 +24,13 @@ class Browser;
 // Designated initializer.
 - (id)initWithBrowser:(Browser*)browser;
 
+// Overridden so that we can change the active state of the avatar button.
+- (void)showAvatarBubbleAnchoredAt:(NSView*)anchor
+                          withMode:(BrowserWindow::AvatarBubbleMode)mode
+                   withServiceType:(signin::GAIAServiceType)serviceType
+                   fromAccessPoint:(signin_metrics::AccessPoint)accessPoint;
+- (void)bubbleWillClose:(NSNotification*)notif;
+
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_PROFILES_AVATAR_BUTTON_CONTROLLER_H_