Add getUserEventLogger to LauncherCallbacks
b/26494415

Change-Id: I8abaaf1269c12435a523e31bf769991018ea5c02
diff --git a/src/com/android/launcher3/LauncherCallbacks.java b/src/com/android/launcher3/LauncherCallbacks.java
index 0be45c3..fc7ff70 100644
--- a/src/com/android/launcher3/LauncherCallbacks.java
+++ b/src/com/android/launcher3/LauncherCallbacks.java
@@ -8,6 +8,7 @@
 import android.view.View;
 import android.view.ViewGroup;
 import com.android.launcher3.allapps.AllAppsSearchBarController;
+import com.android.launcher3.logging.UserEventLogger;
 import com.android.launcher3.util.ComponentKey;
 
 import java.io.FileDescriptor;
@@ -97,6 +98,7 @@
     /*
      * Extensions points for adding / replacing some other aspects of the Launcher experience.
      */
+    public UserEventLogger getLogger();
     public Intent getFirstRunActivity();
     public boolean hasFirstRunActivity();
     public boolean hasDismissableIntroScreen();