Revert 113789 - [cros] Use a distinct icon for the guest session.

chrome/browser/ui/views/frame/browser_view.h

Index: chrome/browser/ui/views/frame/browser_view.h
===================================================================
--- chrome/browser/ui/views/frame/browser_view.h	(revision 113796)
+++ chrome/browser/ui/views/frame/browser_view.h	(working copy)
@@ -158,10 +158,6 @@
   // incognito.
   bool IsOffTheRecord() const;
 
-  // Returns true if the profile associated with this Browser window is
-  // a guest session.
-  bool IsGuestSession() const;
-
   // Returns true if the non-client view should render an avatar icon.
   virtual bool ShouldShowAvatar() const;
 
@@ -189,11 +185,8 @@
   TabContentsWrapper* GetSelectedTabContentsWrapper() const;
 
   // Retrieves the icon to use in the frame to indicate an OTR window.
-  SkBitmap GetOTRAvatarIcon() const;
+  SkBitmap GetOTRAvatarIcon();
 
-  // Retrieves the icon to use in the frame to indicate guest session.
-  SkBitmap GetGuestAvatarIcon() const;
-
 #if defined(OS_WIN)
   // Called right before displaying the system menu to allow the BrowserView
   // to add or delete entries.