Refactor Android printing code to make it more testable.

printing/android/java/src/org/chromium/printing/PrintingControllerFactory.java

Index: printing/android/java/src/org/chromium/printing/PrintingControllerFactory.java
diff --git a/printing/android/java/src/org/chromium/printing/PrintingControllerFactory.java b/printing/android/java/src/org/chromium/printing/PrintingControllerFactory.java
deleted file mode 100644
index 78c67db5a5eab76c1341bc57f081ff677ce9971d..0000000000000000000000000000000000000000
--- a/printing/android/java/src/org/chromium/printing/PrintingControllerFactory.java
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2013 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.
-
-package org.chromium.printing;
-
-import org.chromium.base.ThreadUtils;
-
-import android.content.Context;
-
-public class PrintingControllerFactory {
-    /** The singleton instance for this class. */
-    private static PrintingController sInstance;
-
-    private PrintingControllerFactory() {} // Static factory
-
-    /**
-     * Creates a controller for handling printing with the framework.
-     *
-     * The controller is a singleton, since there can be only one printing action at any time.
-     *
-     * @param context The application context.
-     * @return The resulting PrintingController.
-     */
-    public static PrintingController getPrintingController(
-            Context context) {
-        ThreadUtils.assertOnUiThread();
-        if (sInstance == null) {
-            sInstance = new PrintingControllerImpl(context);
-        }
-        return sInstance;
-    }
-}