Activate the VariationsService for ChromeOS and ensure that it does not ping the server until the E…

chrome/browser/metrics/variations/resource_request_allowed_notifier_test_util.h

+// 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.
+
+#ifndef CHROME_BROWSER_METRICS_VARIATIONS_RESOURCE_REQUEST_ALLOWED_NOTIFIER_TEST_UTIL_H_
+#define CHROME_BROWSER_METRICS_VARIATIONS_RESOURCE_REQUEST_ALLOWED_NOTIFIER_TEST_UTIL_H_
+
+#include "chrome/browser/metrics/variations/resource_request_allowed_notifier.h"
+
+// A light subclass around ResourceRequestAllowedNotifier used to expose some
+// functionality for testing.
+//
+// By default, the constructor sets this class to override
+// ResourceRequestsAllowed, so its state can be set with SetRequestsAllowed.
+// This is meant for higher level tests of services to ensure they adhere to the
+// notifications of the ResourceRequestAllowedNotifier. Lower level tests can
+// disable this by calling SetRequestsAllowedOverride with the value they want
+// it to return.
+class TestRequestAllowedNotifier : public ResourceRequestAllowedNotifier {
+ public:
+  TestRequestAllowedNotifier();
+  virtual ~TestRequestAllowedNotifier();
+
+#if defined(OS_CHROMEOS)
+  void SetEulaAccepted(bool accepted);
+#endif
+
+  // Makes ResourceRequestsAllowed return |allowed| when it is called.
+  void SetRequestsAllowedOverride(bool allowed);
+
+  // Notify observers that requests are allowed.

[Alexei Svitkine (slow), 2012/09/24 15:59:36]

Expand comment to say that this will only work if the observer is expecting a
notification (i.e. it previously asked whether requests are allowed).

Also, change the method name to singular Observer instead of Observers.

[SteveT, 2012/09/24 18:04:27]

Done.

+  void NotifyObservers();
+
+ protected:
+#if defined(OS_CHROMEOS)
+  virtual bool IsEulaAccepted() OVERRIDE;
+#endif
+
+  virtual bool ResourceRequestsAllowed() OVERRIDE;
+
+ private:
+  bool requests_allowed_;

[Alexei Svitkine (slow), 2012/09/24 15:59:36]

Nit: Move this below "override_requests_allowed_" and add a comment that it's
used only if override_requests_allowed_ is true.

[SteveT, 2012/09/24 18:04:27]

Done, but this makes the constructor implementation a bit grosser (see cc file).

+#if defined(OS_CHROMEOS)
+  bool eula_accepted_;
+#endif
+  bool override_requests_allowed_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestRequestAllowedNotifier);
+};
+
+#endif  // CHROME_BROWSER_METRICS_VARIATIONS_RESOURCE_REQUEST_ALLOWED_NOTIFIER_TEST_UTIL_H_