Metrics provider for statistical stack profiler

chrome/browser/metrics/chrome_metrics_service_client.cc

 // Copyright 2014 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 "chrome/browser/metrics/chrome_metrics_service_client.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/platform_thread.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/google/google_brand.h"
+#include "chrome/browser/metrics/call_stack_profile_metrics_provider.h"
 #include "chrome/browser/metrics/chrome_stability_metrics_provider.h"
 #include "chrome/browser/metrics/omnibox_metrics_provider.h"
 #include "chrome/browser/ui/browser_otr_state.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/crash_keys.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/render_messages.h"
 #include "components/metrics/gpu/gpu_metrics_provider.h"
@@ skipping 62 matching lines @@
   }
   NOTREACHED();
   return metrics::SystemProfileProto::CHANNEL_UNKNOWN;
 }
 
 }  // namespace
 
 ChromeMetricsServiceClient::ChromeMetricsServiceClient(
     metrics::MetricsStateManager* state_manager)
     : metrics_state_manager_(state_manager),
-      chromeos_metrics_provider_(NULL),
+      chromeos_metrics_provider_(nullptr),
       waiting_for_collect_final_metrics_step_(false),
       num_async_histogram_fetches_in_progress_(0),
+      profiler_metrics_provider_(nullptr),
+#if defined(ENABLE_PLUGINS)

[Alexei Svitkine (slow), 2015/03/17 23:10:10]

FYI: If https://codereview.chromium.org/999623002/ lands first, you'll have a
merge conflict.

[Mike Wittman, 2015/03/18 01:48:36]

Thanks for the heads up.

+      plugin_metrics_provider_(nullptr),
+#endif
+#if defined(OS_WIN)
+      google_update_metrics_provider_(nullptr),
+#endif
       weak_ptr_factory_(this) {
   DCHECK(thread_checker_.CalledOnValidThread());
   RecordCommandLineMetrics();
   RegisterForNotifications();
 
 #if defined(OS_WIN)
   CountBrowserCrashDumpAttempts();
 #endif  // defined(OS_WIN)
 }
 
@@ skipping 167 matching lines @@
   metrics_service_->RegisterMetricsProvider(
       scoped_ptr<metrics::MetricsProvider>(new ChromeStabilityMetricsProvider));
   metrics_service_->RegisterMetricsProvider(
       scoped_ptr<metrics::MetricsProvider>(new metrics::GPUMetricsProvider()));
 
   profiler_metrics_provider_ =
       new metrics::ProfilerMetricsProvider(cellular_callback);
   metrics_service_->RegisterMetricsProvider(
       scoped_ptr<metrics::MetricsProvider>(profiler_metrics_provider_));
 
+  metrics_service_->RegisterMetricsProvider(
+      scoped_ptr<metrics::MetricsProvider>(
+          new CallStackProfileMetricsProvider));
+
 #if defined(OS_ANDROID)
   metrics_service_->RegisterMetricsProvider(
       scoped_ptr<metrics::MetricsProvider>(
           new AndroidMetricsProvider(g_browser_process->local_state())));
 #endif  // defined(OS_ANDROID)
 
 #if defined(OS_WIN)
   google_update_metrics_provider_ = new GoogleUpdateMetricsProviderWin;
   metrics_service_->RegisterMetricsProvider(
       scoped_ptr<metrics::MetricsProvider>(google_update_metrics_provider_));
@@ skipping 247 matching lines @@
   // Capture the histogram samples.
   if (dumps_with_crash != 0)
     UMA_HISTOGRAM_COUNTS("Chrome.BrowserDumpsWithCrash", dumps_with_crash);
   if (dumps_with_no_crash != 0)
     UMA_HISTOGRAM_COUNTS("Chrome.BrowserDumpsWithNoCrash", dumps_with_no_crash);
   int total_dumps = dumps_with_crash + dumps_with_no_crash;
   if (total_dumps != 0)
     UMA_HISTOGRAM_COUNTS("Chrome.BrowserCrashDumpAttempts", total_dumps);
 }
 #endif  // defined(OS_WIN)