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

src/platform/metrics/metrics_daemon.cc

 // 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.
 
 #include "metrics_daemon.h"
-#include "metrics_library.h"
 
 #include <dbus/dbus-glib-lowlevel.h>
 #include <sys/file.h>
 
 #include <base/eintr_wrapper.h>
 #include <base/logging.h>
 
 #define SAFE_MESSAGE(e) (e.message ? e.message : "unknown error")
 #define DBUS_IFACE_CONNMAN_MANAGER "org.moblin.connman.Manager"
 #define DBUS_IFACE_POWER_MANAGER "org.chromium.Power.Manager"
@@ skipping 77 matching lines @@
 #include "screensaver_states.h"
 };
 
 // static
 const char* MetricsDaemon::kSessionStates_[] = {
 #define STATE(name, capname) #name,
 #include "session_states.h"
 };
 
 void MetricsDaemon::Run(bool run_as_daemon) {
-  Init(false);
+  MetricsLibrary metrics_lib;
+  metrics_lib.Init();
+  Init(false, &metrics_lib);
   if (!run_as_daemon || daemon(0, 0) == 0) {
     Loop();
   }
 }
 
-void MetricsDaemon::Init(bool testing) {
+void MetricsDaemon::Init(bool testing, MetricsLibraryInterface* metrics_lib) {
   testing_ = testing;
+  DCHECK(metrics_lib != NULL);
+  metrics_lib_ = metrics_lib;
   daily_use_record_file_ = kDailyUseRecordFile;
 
   // Don't setup D-Bus and GLib in test mode.
   if (testing)
     return;
 
   g_thread_init(NULL);
   g_type_init();
   dbus_g_thread_init();
 
@@ skipping 315 matching lines @@
     return;
 
   DLOG(INFO) << "destroying use monitor";
   g_source_destroy(usemon_source_);
   usemon_source_ = NULL;
   usemon_interval_ = 0;
 }
 
 void MetricsDaemon::PublishMetric(const char* name, int sample,
                                   int min, int max, int nbuckets) {
-  LOG(INFO) << "received metric: " << name << " " << sample << " "
-            << min << " " << max << " " << nbuckets;
-  if (!testing_) {
-    MetricsLibrary::SendToChrome(name, sample, min, max, nbuckets);
-  }
+  DLOG(INFO) << "received metric: " << name << " " << sample << " "
+             << min << " " << max << " " << nbuckets;
+  metrics_lib_->SendToUMA(name, sample, min, max, nbuckets);
 }