Properly set ShelfAlignment during login

ash/test/test_session_state_delegate.h

Index: ash/test/test_session_state_delegate.h
diff --git a/ash/test/test_session_state_delegate.h b/ash/test/test_session_state_delegate.h
index a77b3cdbeaf8cce57c8ada74ed257a656bcf233a..e5d8cf2adee72460509f2991d9beeb39dee22a6d 100644
--- a/ash/test/test_session_state_delegate.h
+++ b/ash/test/test_session_state_delegate.h
@@ -81,6 +81,12 @@ class TestSessionStateDelegate : public SessionStateDelegate {
   // Setting non NULL image enables avatar icon.
   void SetUserImage(const gfx::ImageSkia& user_image);
 
+  // Updates the internal state that indicates the state of the session. Does

[tdanderson, 2015/02/11 22:59:53]

nit: comment unnecessary here, and this can move to the block at line 25.

[jonross, 2015/02/12 15:36:58]

Done.

+  // not notify listeners.
+  void set_session_state(SessionState session_state) {
+    session_state_ = session_state;
+  }
+
  private:
   // Whether a session is in progress and there is an active user.
   bool has_active_user_;
@@ -111,6 +117,10 @@ class TestSessionStateDelegate : public SessionStateDelegate {
 
   std::vector<MockUserInfo*> user_list_;
 
+  // The current state of the login screen. |session_state_| becomes active
+  // before the profile and browser UI are available.
+  SessionState session_state_;
+
   DISALLOW_COPY_AND_ASSIGN(TestSessionStateDelegate);
 };