Simplify some old avatar menu button code.

chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/profiles/profile_chooser_controller.h"
 
 #import <Carbon/Carbon.h>  // kVK_Return.
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
@@ skipping 1904 matching lines @@
       imageTitleSpacing:kImageTitleSpacing
         backgroundColor:GetDialogBackgroundColor()]);
 
   NSString* title = base::SysUTF16ToNSString(
       profiles::GetProfileSwitcherTextForItem(item));
   [profileButton setTitle:title];
 
   // Use the low-res, small default avatars in the fast user switcher, like
   // we do in the menu bar.
   gfx::Image itemIcon;
-  bool isRectangle;
-  AvatarMenu::GetImageForMenuButton(item.profile_path, &itemIcon, &isRectangle);
+  AvatarMenu::GetImageForMenuButton(item.profile_path, &itemIcon);
 
   [profileButton setDefaultImage:CreateProfileImage(
       itemIcon, kSmallImageSide).ToNSImage()];
   [profileButton setImagePosition:NSImageLeft];
   [profileButton setAlignment:NSLeftTextAlignment];
   [profileButton setBordered:NO];
   [profileButton setTag:itemIndex];
   [profileButton setTarget:self];
   [profileButton setAction:@selector(switchToProfile:)];
 
@@ skipping 461 matching lines @@
 }
 
 - (bool)shouldShowGoIncognito {
   bool incognitoAvailable =
       IncognitoModePrefs::GetAvailability(browser_->profile()->GetPrefs()) !=
           IncognitoModePrefs::DISABLED;
   return incognitoAvailable && !browser_->profile()->IsGuestSession();
 }
 
 @end