Clean up PrefServiceBuilder

chrome/browser/prefs/pref_service_mock_factory.cc

Index: chrome/browser/prefs/pref_service_mock_factory.cc
diff --git a/android_webview/browser/aw_http_auth_handler_base.cc b/chrome/browser/prefs/pref_service_mock_factory.cc
similarity index 41%
copy from android_webview/browser/aw_http_auth_handler_base.cc
copy to chrome/browser/prefs/pref_service_mock_factory.cc
index 0fd5419c2d172186824a2ba6ab92b28ca3946172..16c30b43bcced5b4d843e21da33cf91b707236f3 100644
--- a/android_webview/browser/aw_http_auth_handler_base.cc
+++ b/chrome/browser/prefs/pref_service_mock_factory.cc
@@ -2,11 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "android_webview/browser/aw_http_auth_handler_base.h"
+#include "chrome/browser/prefs/pref_service_mock_factory.h"
 
-namespace android_webview {
+#include "base/prefs/testing_pref_store.h"
 
-AwHttpAuthHandlerBase::~AwHttpAuthHandlerBase() {
+PrefServiceMockFactory::PrefServiceMockFactory() {
+    user_prefs_ = new TestingPrefStore;
 }
 
-}  // namespace android_webview
+PrefServiceMockFactory::~PrefServiceMockFactory() {}