[Extensions] Fix incorrect counting prefs in activity log

chrome/browser/extensions/activity_log/activity_log_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/extensions/activity_log/activity_log.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 412 matching lines @@
 }
 
 class ActivityLogTestWithoutSwitch : public ActivityLogTest {
  public:
   ActivityLogTestWithoutSwitch() {}
   ~ActivityLogTestWithoutSwitch() override {}
   bool enable_activity_logging_switch() const override { return false; }
 };
 
 TEST_F(ActivityLogTestWithoutSwitch, TestShouldLog) {
+  static_cast<TestExtensionSystem*>(
+      ExtensionSystem::Get(profile()))->SetReady();
   ActivityLog* activity_log = ActivityLog::GetInstance(profile());
   scoped_refptr<const Extension> empty_extension =
       test_util::CreateEmptyExtension();
   extension_service_->AddExtension(empty_extension.get());
   // Since the command line switch for logging isn't enabled and there's no
   // watchdog app active, the activity log shouldn't log anything.
   EXPECT_FALSE(activity_log->ShouldLog(empty_extension->id()));
   const char kWhitelistedExtensionId[] = "eplckmlabaanikjjcgnigddmagoglhmp";
   scoped_refptr<const Extension> activity_log_extension =
       test_util::CreateEmptyExtension(kWhitelistedExtensionId);
   extension_service_->AddExtension(activity_log_extension.get());
   // Loading a watchdog app means the activity log should log other extension
   // activities...
   EXPECT_TRUE(activity_log->ShouldLog(empty_extension->id()));
   // ... but not those of the watchdog app.
   EXPECT_FALSE(activity_log->ShouldLog(activity_log_extension->id()));
   extension_service_->DisableExtension(activity_log_extension->id(),
                                        Extension::DISABLE_USER_ACTION);
   // Disabling the watchdog app means that we're back to never logging anything.
   EXPECT_FALSE(activity_log->ShouldLog(empty_extension->id()));
 }
 
 }  // namespace extensions