Make selection color fill underneath the scroll bar for downloads.

Fix for http://b/issue?id=2532825

Change-Id: Ida953c8c3db4e0391a72d07906db0c8bd91171b6
diff --git a/res/layout/browser_download_item.xml b/res/layout/browser_download_item.xml
index cb8a690..52f49c1 100644
--- a/res/layout/browser_download_item.xml
+++ b/res/layout/browser_download_item.xml
@@ -21,7 +21,9 @@
 
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content">
+    android:layout_height="wrap_content"
+    android:paddingRight="?android:attr/scrollbarSize"
+    >
 
     <ImageView android:id="@+id/download_icon"
         android:layout_width="@android:dimen/app_icon_size"