MediaPerceptionPrivate API impl and testing.

chromeos/dbus/fake_upstart_client.h

 // Copyright 2016 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 CHROMEOS_DBUS_FAKE_UPSTART_CLIENT_H_
 #define CHROMEOS_DBUS_FAKE_UPSTART_CLIENT_H_
 
 #include "base/macros.h"
 
 #include "chromeos/dbus/upstart_client.h"
 
 namespace chromeos {
 
 class CHROMEOS_EXPORT FakeUpstartClient : public UpstartClient {
  public:
   FakeUpstartClient();
   ~FakeUpstartClient() override;
 
   // DBusClient overrides.
   void Init(dbus::Bus* bus) override;
 
   // UpstartClient overrides.
   void StartAuthPolicyService() override;
   void RestartAuthPolicyService() override;
   void StartMediaAnalytics(const UpstartCallback& callback) override;
   void StopMediaAnalytics() override;
 
+  void SetStartMediaAnalyticsWillSucceed(bool will_succeed);
+
  private:
+  // Sets whether the StartMediaAnalytics method will succeed. Used for testing
+  // upstart failure case.

[tbarzic, 2017/05/16 20:56:30]

no need for the "Used for testing" comment.

[Luke Sorenson, 2017/05/16 21:33:33]

Done.

+  bool start_media_analytics_will_succeed_;
+
   DISALLOW_COPY_AND_ASSIGN(FakeUpstartClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_FAKE_UPSTART_CLIENT_H_