Use ContextUtils in PhysicalWeb

chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWebBleClient.java

 // 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.
 
 package org.chromium.chrome.browser.physicalweb;
 
 import android.app.Activity;
 
+import org.chromium.base.ContextUtils;
 import org.chromium.base.Log;
 import org.chromium.chrome.browser.ChromeApplication;
 
 /**
  * The Client that harvests URLs from BLE signals.
  * This class is designed to scan URSs from Bluetooth Low Energy beacons.
  * This class is currently an empty implementation and must be extended by a
  * subclass.
  */
 public class PhysicalWebBleClient {
     private static PhysicalWebBleClient sInstance = null;
     private static final String TAG = "PhysicalWeb";
 
     /**
      * Get a singleton instance of this class.
-     * @param chromeApplication An instance of {@link ChromeApplication}, used to get the
-     * appropriate PhysicalWebBleClient implementation.
      * @return an instance of this class (or subclass) as decided by the
      * application parameter
      */
-    public static PhysicalWebBleClient getInstance(ChromeApplication chromeApplication) {
+    public static PhysicalWebBleClient getInstance() {
         if (sInstance == null) {
-            sInstance = chromeApplication.createPhysicalWebBleClient();
+            sInstance = ((ChromeApplication) ContextUtils.getApplicationContext())
+                    .createPhysicalWebBleClient();
         }
         return sInstance;
     }
 
     /**
      * Begin a background subscription to URLs broadcasted from BLE beacons.
      * This currently does nothing and should be overridden by a subclass.
      * @param callback Callback to be run when subscription task is done, regardless of whether it
      *         is successful.
      */
@@ skipping 43 matching lines @@
     }
 
     /**
      * Cancel a foreground subscription to URLs broadcasted from BLE beacons.
      * This currently does nothing and should be overridden by a subclass.
      */
     void foregroundUnsubscribe() {
         Log.d(TAG, "foreground unsubscribing in empty client");
     }
 }