Adding UMA statistics for multi profile

ash/multi_profile_uma.h

Index: ash/multi_profile_uma.h
diff --git a/ash/multi_profile_uma.h b/ash/multi_profile_uma.h
index ead66e8061b30710fcecb1df959b269653587201..1c70482b67f89a75d8f197b0d5674c30612d71a1 100644
--- a/ash/multi_profile_uma.h
+++ b/ash/multi_profile_uma.h
@@ -16,10 +16,11 @@ namespace ash {
 class ASH_EXPORT MultiProfileUMA {
  public:
   // Keep these enums up to date with tools/metrics/histograms/histograms.xml.
-  enum SwitchActiveUserAction {
-    SWITCH_ACTIVE_USER_BY_TRAY = 0,
-    SWITCH_ACTIVE_USER_BY_ACCELERATOR,
-    NUM_SWITCH_ACTIVE_USER_ACTIONS
+  enum SessionMode {
+    SESSION_SINGLE_USER_MODE = 0,
+    SESSION_SIDE_BY_SIDE_MODE,
+    SESSION_SEPARATE_DESKTOP_MODE,
+    NUM_SESSION_MODES
   };
 
   enum SigninUserAction {
@@ -28,12 +29,32 @@ class ASH_EXPORT MultiProfileUMA {
     NUM_SIGNIN_USER_ACTIONS
   };
 
-  // Record switching the active user and what UI path was taken.
-  static void RecordSwitchActiveUser(SwitchActiveUserAction action);
+  enum SwitchActiveUserAction {
+    SWITCH_ACTIVE_USER_BY_TRAY = 0,
+    SWITCH_ACTIVE_USER_BY_ACCELERATOR,
+    NUM_SWITCH_ACTIVE_USER_ACTIONS
+  };
+
+  enum TeleportWindowAction {
+    TELEPORT_WINDOW_DRAG_AND_DROP = 0,
+    TELEPORT_WINDOW_CAPTION_MENU,
+    TELEPORT_WINDOW_RETURN_BY_MINIMIZE,
+    TELEPORT_WINDOW_RETURN_BY_LAUNCHER,
+    NUM_TELEPORT_WINDOW_ACTIONS
+  };
+
+  // Record the type of user (multi profile) session.
+  static void RecordSessionMode(SessionMode mode);
 
   // Record signing in a new user and what UI path was taken.
   static void RecordSigninUser(SigninUserAction action);
 
+  // Record switching the active user and what UI path was taken.
+  static void RecordSwitchActiveUser(SwitchActiveUserAction action);
+
+  // Record the way and how many times a window got teleported to another desk.
+  static void RecordTeleportAction(TeleportWindowAction action);
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(MultiProfileUMA);
 };