Start transition the metrics library to non-static API. Use gmock in tests.

src/platform/metrics/metrics_daemon.h

 // Copyright (c) 2010 The Chromium OS 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 METRICS_DAEMON_H_
 #define METRICS_DAEMON_H_
 
 #include <dbus/dbus.h>
 #include <glib.h>
 #include <time.h>
 
+#include "metrics_library.h"
+
 #include <gtest/gtest_prod.h>  // for FRIEND_TEST
 
 class MetricsDaemon {
 
  public:
   MetricsDaemon()
       : daily_use_record_file_(NULL),
         network_state_(kUnknownNetworkState),
         network_state_last_(0),
         power_state_(kUnknownPowerState),
         screensaver_state_(kUnknownScreenSaverState),
         session_state_(kUnknownSessionState),
         user_active_(false),
         user_active_last_(0),
         daily_use_day_last_(0),
         usemon_interval_(0),
         usemon_source_(NULL) {}
   ~MetricsDaemon() {}
 
   // Does all the work. If |run_as_daemon| is true, daemonizes by
   // forking.
   void Run(bool run_as_daemon);
 
  private:
   friend class MetricsDaemonTest;
-  FRIEND_TEST(MetricsDaemonTest, LogDailyUseRecord);
+  FRIEND_TEST(MetricsDaemonTest, LogDailyUseRecordBadFileLocation);
+  FRIEND_TEST(MetricsDaemonTest, LogDailyUseRecordOnLogin);
+  FRIEND_TEST(MetricsDaemonTest, LogDailyUseRecordRoundDown);
+  FRIEND_TEST(MetricsDaemonTest, LogDailyUseRecordRoundUp);
   FRIEND_TEST(MetricsDaemonTest, LookupNetworkState);
   FRIEND_TEST(MetricsDaemonTest, LookupPowerState);
   FRIEND_TEST(MetricsDaemonTest, LookupScreenSaverState);
   FRIEND_TEST(MetricsDaemonTest, LookupSessionState);
   FRIEND_TEST(MetricsDaemonTest, MessageFilter);
-  FRIEND_TEST(MetricsDaemonTest, NetStateChanged);
+  FRIEND_TEST(MetricsDaemonTest, NetStateChangedSimpleDrop);
+  FRIEND_TEST(MetricsDaemonTest, NetStateChangedSuspend);
   FRIEND_TEST(MetricsDaemonTest, PowerStateChanged);
   FRIEND_TEST(MetricsDaemonTest, PublishMetric);
   FRIEND_TEST(MetricsDaemonTest, ScreenSaverStateChanged);
   FRIEND_TEST(MetricsDaemonTest, SessionStateChanged);
-  FRIEND_TEST(MetricsDaemonTest, SetUserActiveState);
+  FRIEND_TEST(MetricsDaemonTest, SetUserActiveStateSendOnLogin);
+  FRIEND_TEST(MetricsDaemonTest, SetUserActiveStateSendOnMonitor);
 
   // The network states (see network_states.h).
   enum NetworkState {
     kUnknownNetworkState = -1, // Initial/unknown network state.
 #define STATE(name, capname) kNetworkState ## capname,
 #include "network_states.h"
     kNumberNetworkStates
   };
 
   // The power states (see power_states.h).
@@ skipping 47 matching lines @@
   // Array of power states.
   static const char* kPowerStates_[kNumberPowerStates];
 
   // Array of screen-saver states.
   static const char* kScreenSaverStates_[kNumberScreenSaverStates];
 
   // Array of user session states.
   static const char* kSessionStates_[kNumberSessionStates];
 
   // Initializes.
-  void Init(bool testing);
+  void Init(bool testing, MetricsLibraryInterface* metrics_lib);
 
   // Creates the event loop and enters it.
   void Loop();
 
   // D-Bus filter callback.
   static DBusHandlerResult MessageFilter(DBusConnection* connection,
                                          DBusMessage* message,
                                          void* user_data);
 
   // Processes network state change.
@@ skipping 56 matching lines @@
 
   // Sends a stat to Chrome for transport to UMA (or prints it for
   // testing). See MetricsLibrary::SendToChrome in metrics_library.h
   // for a description of the arguments.
   void PublishMetric(const char* name, int sample,
                      int min, int max, int nbuckets);
 
   // Test mode.
   bool testing_;
 
+  // The metrics library handle.
+  MetricsLibraryInterface* metrics_lib_;
+
   const char* daily_use_record_file_;
 
   // Current network state.
   NetworkState network_state_;
 
   // Timestamps last network state update.
   time_t network_state_last_;
 
   // Current power state.
   PowerState power_state_;
@@ skipping 16 matching lines @@
 
   // Sleep period until the next daily usage aggregation performed by
   // the daily use monitor (see ScheduleUseMonitor).
   int usemon_interval_;
 
   // Scheduled daily use monitor source (see ScheduleUseMonitor).
   GSource* usemon_source_;
 };
 
 #endif  // METRICS_DAEMON_H_