Use a spinner for the folder selector.

Bug:2953515
Change-Id: I6487330840e38cf1d03a2a9ffcecbc6e211a3c38
diff --git a/res/layout/browser_add_bookmark.xml b/res/layout/browser_add_bookmark.xml
index 8adf4b6..e25f903 100644
--- a/res/layout/browser_add_bookmark.xml
+++ b/res/layout/browser_add_bookmark.xml
@@ -131,19 +131,15 @@
             android:text="@string/containing_folder"
             android:textAppearance="?android:attr/textAppearanceMedium" />
 
-        <TextView
+        <view class="com.android.browser.addbookmark.FolderSpinner"
             android:id="@+id/folder"
             android:layout_height="wrap_content"
-            android:layout_width="250dip"
+            android:layout_width="wrap_content"
             android:layout_marginRight="20dip"
             android:layout_marginLeft="20dip"
+            android:spinnerMode="dropdown"
             android:gravity="center_vertical"
-            android:singleLine="true"
-            android:ellipsize="start"
-            android:text="@string/bookmarks"
-            android:drawableLeft="@drawable/ic_menu_bookmarks"
-            android:layout_marginBottom="40dip"
-            android:textAppearance="?android:attr/textAppearanceMedium" />
+            />
       </TableRow>
     </TableLayout>