Remove factory methods from ChromeApplication.

chrome/android/java/src/org/chromium/chrome/browser/datausage/ExternalDataUseObserver.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.datausage;
 
 import android.content.Context;
 import android.text.TextUtils;
 
 import org.chromium.base.ApplicationState;
 import org.chromium.base.ApplicationStatus;
 import org.chromium.base.ContextUtils;
 import org.chromium.base.PackageUtils;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.base.annotations.NativeClassQualifiedName;
-import org.chromium.chrome.browser.ChromeApplication;
+import org.chromium.chrome.browser.AppHooks;
 
 /**
  * This class provides a base class implementation of a data use observer that is external to
  * Chromium. This class should be accessed only on UI thread.
  */
 @JNINamespace("chrome::android")
 public class ExternalDataUseObserver {
     /**
      * Listens for application state changes and whenever Chromium state changes to running, checks
      * and notifies {@link #ExternalDataUseObserverBridge} if the control app gets installed or
@@ skipping 54 matching lines @@
      */
     private long mNativeExternalDataUseObserverBridge;
 
     /**
      * {@link #ControlAppManager} object that notifies when control app is installed.
      */
     private ControlAppManager mControlAppManager;
 
     @CalledByNative
     private static ExternalDataUseObserver create(Context context, long nativePtr) {
-        return ((ChromeApplication) context).createExternalDataUseObserver(nativePtr);
+        return AppHooks.get().createExternalDataUseObserver(nativePtr);
     }
 
     /**
      * Creates an instance of {@link #ExternalDataUseObserver}.
      * @param nativePtr pointer to the native ExternalDataUseObserver object.
      */
     public ExternalDataUseObserver(long nativePtr) {
         mNativeExternalDataUseObserverBridge = nativePtr;
         assert mNativeExternalDataUseObserverBridge != 0;
     }
@@ skipping 106 matching lines @@
             String[] appPackageName, String[] domainPathRegEx, String[] label);
 
     @NativeClassQualifiedName("ExternalDataUseObserverBridge")
     private native void nativeOnReportDataUseDone(
             long nativeExternalDataUseObserver, boolean success);
 
     @NativeClassQualifiedName("ExternalDataUseObserverBridge")
     private native void nativeOnControlAppInstallStateChange(
             long nativeExternalDataUseObserver, boolean isControlAppInstalled);
 }