Separating predictionrowview into a separate layout file.

This enables overriding the predictions_view file.

Change-Id: Ie42ce37e1bcd3c3c7b51e0e734e7c01a6f9b9a98
diff --git a/res/layout/all_apps.xml b/res/layout/all_apps.xml
index 6750c72..3f6be2c 100644
--- a/res/layout/all_apps.xml
+++ b/res/layout/all_apps.xml
@@ -39,10 +39,7 @@
         android:clipToPadding="false"
         android:layout_below="@id/search_container_all_apps" >
 
-        <com.android.launcher3.allapps.PredictionRowView
-            android:id="@+id/header_content"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content" />
+        <include layout="@layout/predictions_view" android:id="@+id/header_content" />
 
         <include layout="@layout/all_apps_divider"
             android:id="@+id/divider"