Simplify some old avatar menu button code.

chrome/browser/profiles/avatar_menu.h

Index: chrome/browser/profiles/avatar_menu.h
diff --git a/chrome/browser/profiles/avatar_menu.h b/chrome/browser/profiles/avatar_menu.h
index 4b46f6986d27b6588db8a4ea34e0866a814180c5..b3ac4db467023a22cc96c4aff4ef8ebce82d97a1 100644
--- a/chrome/browser/profiles/avatar_menu.h
+++ b/chrome/browser/profiles/avatar_menu.h
@@ -97,12 +97,10 @@ class AvatarMenu :
   // True if avatar menu should be displayed.
   static bool ShouldShowAvatarMenu();
 
-  // Sets |image| to the avatar corresponding to the profile at |profile_path|
-  // and sets |is_rectangle| to true unless |image| is a built-in profile
-  // avatar. For built-in profile avatars, returns the non-high res version.
+  // Sets |image| to the avatar corresponding to the profile at |profile_path|.
+  // For built-in profile avatars, returns the non-high res version.
   static void GetImageForMenuButton(const base::FilePath& profile_path,
-                                    gfx::Image* image,
-                                    bool* is_rectangle);
+                                    gfx::Image* image);
 
   // Opens a Browser with the specified profile in response to the user
   // selecting an item. If |always_create| is true then a new window is created