Centering turn on Bluetooth message on the chooser

chrome/android/java/res/layout/item_chooser_dialog.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2015 The Chromium Authors. All rights reserved.
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file.
  -->
 
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:chrome="http://schemas.android.com/apk/res-auto"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:orientation="vertical"
     android:paddingBottom="8dp"
     android:paddingTop="20dp" >
 
     <!-- The title at the top. -->
     <org.chromium.ui.widget.TextViewWithClickableSpans
         android:id="@+id/dialog_title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:paddingBottom="8dp"
         android:paddingStart="16dp"
         android:paddingEnd="16dp"
         android:textSize="16sp" />
 
-    <!-- The "no item found" message. -->
-    <org.chromium.ui.widget.TextViewWithClickableSpans
-        android:id="@+id/not_found_message"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="8dp"
-        android:layout_marginStart="16dp"
-        android:layout_marginEnd="16dp"
-        android:textSize="16sp"
-        android:visibility="gone" />
-
     <!-- A layout containing a spinning progress bar that gets replaced with a
          list of items. -->
     <FrameLayout
         android:id="@+id/container"
         android:layout_width="fill_parent"
         android:layout_height="100dp" >
+
+        <!-- The "no item found" message. -->
+        <org.chromium.ui.widget.TextViewWithClickableSpans
+            android:id="@+id/not_found_message"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:layout_marginTop="8dp"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="16dp"
+            android:textSize="16sp"
+            android:visibility="gone" />
+
         <ProgressBar
             android:id="@+id/progress"
             android:layout_width="24dp"
             android:layout_height="24dp"
             android:layout_gravity="center"
             android:indeterminate="true" />
 
         <ListView
             android:id="@+id/items"
             android:layout_width="fill_parent"
@@ skipping 22 matching lines @@
         android:layout_width="wrap_content"
         android:layout_gravity="end"
         android:layout_marginTop="12dp"
         android:layout_marginEnd="12dp"
         android:paddingStart="16dp"
         android:paddingEnd="16dp"
         android:textAllCaps="true"
         android:textColor="#fff"
         chrome:buttonColor="@color/pref_accent_color" />
 </LinearLayout>