Split ExtensionTestObserver and move to //extensions.

chrome/browser/extensions/api/activity_log_private/activity_log_private_apitest.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 <string>
 #include <utility>
 
 #include "build/build_config.h"
 #include "chrome/browser/extensions/activity_log/activity_log.h"
 #include "chrome/browser/extensions/extension_apitest.h"
@@ skipping 12 matching lines @@
 using net::test_server::HttpResponse;
 using net::test_server::HttpRequest;
 
 namespace extensions {
 
 class ActivityLogApiTest : public ExtensionApiTest {
  public:
   ActivityLogApiTest() : saved_cmdline_(base::CommandLine::NO_PROGRAM) {}
 
   ~ActivityLogApiTest() override {
-    ExtensionApiTest::SetUpCommandLine(&saved_cmdline_);
     *base::CommandLine::ForCurrentProcess() = saved_cmdline_;
   }
 
   void SetUpCommandLine(base::CommandLine* command_line) override {
     ExtensionApiTest::SetUpCommandLine(command_line);
     saved_cmdline_ = *base::CommandLine::ForCurrentProcess();
     command_line->AppendSwitch(switches::kEnableExtensionActivityLogging);
   }
 
   std::unique_ptr<HttpResponse> HandleRequest(const HttpRequest& request) {
@@ skipping 27 matching lines @@
 
   const Extension* friend_extension = LoadExtensionIncognito(
       test_data_dir_.AppendASCII("activity_log_private/friend"));
   ASSERT_TRUE(friend_extension);
   ASSERT_TRUE(RunExtensionTest("activity_log_private/test"));
   ActivityLog::GetInstance(profile())->SetWatchdogAppActiveForTesting(false);
 }
 
 }  // namespace extensions