Sanitizing various search container ids and layout names

Bug: 63014381
Change-Id: Ia75a8a048c7a85c6324f8861abd2bcf1721032fa
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 26c5c9d..6ae4068 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -488,7 +488,7 @@
     }
 
     @Override
-    public View findViewById(int id) {
+    public <T extends View> T findViewById(int id) {
         return mLauncherView.findViewById(id);
     }