Use Launcher.getLauncher(Context) instead of type-casting.

Bug: 32010039
Change-Id: Icb80d3e547a706740b84df2cb80f99e4a7f81c43
diff --git a/src/com/android/launcher3/FocusHelper.java b/src/com/android/launcher3/FocusHelper.java
index c73ceea..789c3f9 100644
--- a/src/com/android/launcher3/FocusHelper.java
+++ b/src/com/android/launcher3/FocusHelper.java
@@ -204,7 +204,7 @@
             return consume;
         }
 
-        final Launcher launcher = (Launcher) v.getContext();
+        final Launcher launcher = Launcher.getLauncher(v.getContext());
         final DeviceProfile profile = launcher.getDeviceProfile();
 
         if (DEBUG) {
@@ -341,7 +341,7 @@
             return consume;
         }
 
-        Launcher launcher = (Launcher) v.getContext();
+        Launcher launcher = Launcher.getLauncher(v.getContext());
         DeviceProfile profile = launcher.getDeviceProfile();
 
         if (DEBUG) {