Centering turn on Bluetooth message on the chooser

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

Index: chrome/android/java/res/layout/item_chooser_dialog.xml
diff --git a/chrome/android/java/res/layout/item_chooser_dialog.xml b/chrome/android/java/res/layout/item_chooser_dialog.xml
index f675a9b8b14f6c89e0c4e27a663bf73615953846..d1aa10d4805b2b299169e08bc454e97300af13e6 100644
--- a/chrome/android/java/res/layout/item_chooser_dialog.xml
+++ b/chrome/android/java/res/layout/item_chooser_dialog.xml
@@ -22,23 +22,25 @@
         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"