[Extensions][TaskScheduler] Update ActivityLog for scheduling migration

chrome/browser/extensions/activity_log/activity_log_enabled_unittest.cc

 // 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.
 
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "base/test/scoped_command_line.h"
 #include "chrome/browser/extensions/activity_log/activity_log.h"
+#include "chrome/browser/extensions/activity_log/activity_log_task_runner.h"
 #include "chrome/browser/extensions/api/activity_log_private/activity_log_private_api.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/test_extension_system.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/prefs/pref_service.h"
 #include "extensions/browser/uninstall_reason.h"
 #include "extensions/common/extension_builder.h"
 
 namespace extensions {
 
 const char kExtensionID[] = "eplckmlabaanikjjcgnigddmagoglhmp";
 
 class ActivityLogEnabledTest : public ChromeRenderViewHostTestHarness {
  protected:
   void SetUp() override {
     ChromeRenderViewHostTestHarness::SetUp();
+    SetActivityLogTaskRunnerForTesting(
+        base::ThreadTaskRunnerHandle::Get().get());
   }
 
   void TearDown() override {
     ChromeRenderViewHostTestHarness::TearDown();
+    SetActivityLogTaskRunnerForTesting(nullptr);
   }
 };
 
 TEST_F(ActivityLogEnabledTest, NoSwitch) {
   std::unique_ptr<TestingProfile> profile(
       static_cast<TestingProfile*>(CreateBrowserContext()));
   EXPECT_FALSE(
       profile->GetPrefs()->GetInteger(prefs::kWatchdogExtensionActive));
 
   ActivityLog* activity_log = ActivityLog::GetInstance(profile.get());
@@ skipping 260 matching lines @@
           .SetID(kExtensionID)
           .Build();
   extension_service->AddExtension(extension.get());
 
   EXPECT_EQ(
       1, profile->GetPrefs()->GetInteger(prefs::kWatchdogExtensionActive));
   EXPECT_TRUE(activity_log->is_active());
 }
 
 }  // namespace extensions