[Mac] Remove some dead avatar menu code

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

Index: chrome/browser/ui/cocoa/profiles/avatar_label_button.h
diff --git a/chrome/browser/ui/cocoa/profiles/avatar_label_button.h b/chrome/browser/ui/cocoa/profiles/avatar_label_button.h
deleted file mode 100644
index 23cc33aa1c07292097fc58c671adc2cb57040011..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/cocoa/profiles/avatar_label_button.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_UI_COCOA_PROFILES_AVATAR_LABEL_BUTTON_H_
-#define CHROME_BROWSER_UI_COCOA_PROFILES_AVATAR_LABEL_BUTTON_H_
-
-#import <Cocoa/Cocoa.h>
-
-#import "base/mac/scoped_nsobject.h"
-
-@interface AvatarLabelButton : NSButton
-@end
-
-// Draws the button cell for the avatar label.
-@interface AvatarLabelButtonCell : NSButtonCell
-
-// Returns the size of the label text (including boundaries).
-- (NSSize)labelTextSize;
-
-@end
-
-#endif  // CHROME_BROWSER_UI_COCOA_PROFILES_AVATAR_LABEL_BUTTON_H_