Move UserInfo to user_manager.

ash/session/session_state_delegate.h

Index: ash/session/session_state_delegate.h
diff --git a/ash/session/session_state_delegate.h b/ash/session/session_state_delegate.h
index 78777a06c42093ec8bbf213d2575230262b7c759..89c1ff8d4f951d2bd76630ebddfaf86f17107b8c 100644
--- a/ash/session/session_state_delegate.h
+++ b/ash/session/session_state_delegate.h
@@ -23,10 +23,13 @@ namespace gfx {
 class ImageSkia;
 }  // namespace gfx
 
+namespace user_manager {
+class UserInfo;
+}  // namespace user_manager
+
 namespace ash {
 
 class SessionStateObserver;
-class UserInfo;
 
 // The index for the multi-profile item to use. The list is always LRU sorted
 // So that the index #0 is the currently active user.
@@ -113,10 +116,11 @@ class ASH_EXPORT SessionStateDelegate {
 
   // Gets the user info for the user with the given |index|.
   // Note that |index| can at maximum be |NumberOfLoggedInUsers() - 1|.
-  virtual const UserInfo* GetUserInfo(MultiProfileIndex index) const = 0;
+  virtual const user_manager::UserInfo* GetUserInfo(
+      MultiProfileIndex index) const = 0;
 
   // Gets the avatar image for the user associated with the |context|.
-  virtual const UserInfo* GetUserInfo(
+  virtual const user_manager::UserInfo* GetUserInfo(
       content::BrowserContext* context) const = 0;
 
   // Whether or not the window's title should show the avatar.