cros: CustomFrameViewAsh avatar icon from a window prop

chrome/browser/ui/ash/session_util.h

Index: chrome/browser/ui/ash/session_util.h
diff --git a/chrome/browser/ui/ash/session_util.h b/chrome/browser/ui/ash/session_util.h
index a190a9cc84f42534cc0938e64520a6195dac6c58..961acec5d2192f70ce3a61f22f9fba995cf49b74 100644
--- a/chrome/browser/ui/ash/session_util.h
+++ b/chrome/browser/ui/ash/session_util.h
@@ -16,6 +16,10 @@ namespace content {
 class BrowserContext;
 }
 
+namespace user_manager {
+class User;
+}
+
 content::BrowserContext* GetActiveBrowserContext();
 
 using GetActiveBrowserContextCallback =
@@ -30,5 +34,6 @@ bool CanShowWindowForUser(
     const GetActiveBrowserContextCallback& get_context_callback);
 
 gfx::ImageSkia GetAvatarImageForContext(content::BrowserContext* context);
+gfx::ImageSkia GetAvatarImageForUser(const user_manager::User* user);
 
 #endif  // CHROME_BROWSER_UI_ASH_SESSION_UTIL_H_