Remove the unmaintained performance monitor.

chrome/browser/performance_monitor/performance_monitor.cc

 // 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.
 
 #include "chrome/browser/performance_monitor/performance_monitor.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"

[Devlin, 2014/09/09 02:12:57]

Do we really need all these includes still?

[tonyg, 2014/09/09 18:28:10]

Good catch, I removed most of them.

 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "base/process/process_iterator.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/threading/worker_pool.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/performance_monitor/constants.h"
-#include "chrome/browser/performance_monitor/performance_monitor_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_iterator.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
 #include "content/public/browser/browser_child_process_host.h"
 #include "content/public/browser/browser_child_process_host_iterator.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_data.h"
 #include "content/public/browser/load_notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
+#include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/render_widget_host_iterator.h"
 #include "content/public/browser/web_contents.h"
 #include "net/url_request/url_request.h"
 
-#if defined(ENABLE_EXTENSIONS)
-#include "chrome/browser/extensions/crx_installer.h"
-#include "chrome/common/extensions/extension_constants.h"
-#include "extensions/common/extension.h"
-#endif
-
 using content::BrowserThread;
 
-#if defined(ENABLE_EXTENSIONS)
-using extensions::Extension;
-using extensions::UnloadedExtensionInfo;
-#endif
-
 namespace performance_monitor {
 
-namespace {
-
-#if !defined(OS_ANDROID)
-std::string TimeToString(base::Time time) {
-  int64 time_int64 = time.ToInternalValue();
-  return base::Int64ToString(time_int64);
-}
-#endif  // !defined(OS_ANDROID)
-
-bool StringToTime(std::string time, base::Time* output) {
-  int64 time_int64 = 0;
-  if (!base::StringToInt64(time, &time_int64))
-    return false;
-  *output = base::Time::FromInternalValue(time_int64);
-  return true;
-}
-
-// Try to get the URL for the RenderViewHost if the host does not correspond to
-// an incognito profile (we don't store URLs from incognito sessions). Returns
-// true if url has been populated, and false otherwise.
-bool MaybeGetURLFromRenderView(const content::RenderViewHost* view,
-                               std::string* url) {
-  content::WebContents* web_contents =
-      content::WebContents::FromRenderViewHost(view);
-
-  if (Profile::FromBrowserContext(
-          web_contents->GetBrowserContext())->IsOffTheRecord()) {
-    return false;
-  }
-
-  *url = web_contents->GetURL().spec();
-  return true;
-}
-
-// Takes ownership of and deletes |database| on the background thread, to
-// avoid destruction in the middle of an operation.
-void DeleteDatabaseOnBackgroundThread(Database* database) {
-  delete database;
-}
-
-}  // namespace
-
-bool PerformanceMonitor::initialized_ = false;
-
-PerformanceMonitor::PerformanceDataForIOThread::PerformanceDataForIOThread()
-    : network_bytes_read(0) {
-}
-
-PerformanceMonitor::PerformanceMonitor()
-    : gather_interval_in_seconds_(kDefaultGatherIntervalInSeconds),
-      database_logging_enabled_(false),
-      timer_(FROM_HERE,
-             base::TimeDelta::FromSeconds(kSampleIntervalInSeconds),
-             this,
-             &PerformanceMonitor::DoTimedCollections),
-      disable_timer_autostart_for_testing_(false) {
+PerformanceMonitor::PerformanceMonitor() {
 }
 
 PerformanceMonitor::~PerformanceMonitor() {
-  BrowserThread::PostBlockingPoolSequencedTask(
-      Database::kDatabaseSequenceToken,
-      FROM_HERE,
-      base::Bind(&DeleteDatabaseOnBackgroundThread, database_.release()));
-}
-
-bool PerformanceMonitor::SetDatabasePath(const base::FilePath& path) {
-  if (!database_.get()) {
-    database_path_ = path;
-    return true;
-  }
-
-  // PerformanceMonitor already initialized with another path.
-  return false;
 }
 
 // static
 PerformanceMonitor* PerformanceMonitor::GetInstance() {
   return Singleton<PerformanceMonitor>::get();
 }
 
-void PerformanceMonitor::Initialize() {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kPerformanceMonitorGathering)) {
-    database_logging_enabled_ = true;
-
-    std::string switch_value = CommandLine::ForCurrentProcess()->
-        GetSwitchValueASCII(switches::kPerformanceMonitorGathering);
-
-    if (!switch_value.empty()) {
-      int specified_interval = 0;
-      if (!base::StringToInt(switch_value, &specified_interval) ||
-          specified_interval <= 0) {
-        LOG(ERROR) << "Invalid value for switch: '"
-                   << switches::kPerformanceMonitorGathering
-                   << "'; please use an integer greater than 0.";
-      } else {
-        gather_interval_in_seconds_ = std::max(specified_interval,
-                                               kSampleIntervalInSeconds);
-      }
-    }
-  }
-
-  DCHECK(gather_interval_in_seconds_ >= kSampleIntervalInSeconds);
-
-  next_collection_time_ = base::Time::Now() +
-      base::TimeDelta::FromSeconds(gather_interval_in_seconds_);
-
-  util::PostTaskToDatabaseThreadAndReply(
-      FROM_HERE,
-      base::Bind(&PerformanceMonitor::InitOnBackgroundThread,
-                 base::Unretained(this)),
-      base::Bind(&PerformanceMonitor::FinishInit,
-                 base::Unretained(this)));
-}
-
-void PerformanceMonitor::InitOnBackgroundThread() {
-  CHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  if (database_logging_enabled_) {
-    if (!database_)
-      database_ = Database::Create(database_path_);
-
-    if (!database_) {
-      LOG(ERROR) << "Could not initialize database; aborting initialization.";
-      database_logging_enabled_ = false;
-      return;
-    }
-
-    // Initialize the io thread's performance data to the value in the database;
-    // if there isn't a recording in the database, the value stays at 0.
-    Metric metric;
-    if (database_->GetRecentStatsForActivityAndMetric(METRIC_NETWORK_BYTES_READ,
-                                                      &metric)) {
-      performance_data_for_io_thread_.network_bytes_read = metric.value;
-    }
-  }
-}
-
-void PerformanceMonitor::FinishInit() {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  // Events and notifications are only useful if we're logging to the database.
-  if (database_logging_enabled_) {
-    RegisterForNotifications();
-    CheckForUncleanExits();
-    BrowserThread::PostBlockingPoolSequencedTask(
-        Database::kDatabaseSequenceToken,
-        FROM_HERE,
-        base::Bind(&PerformanceMonitor::CheckForVersionUpdateOnBackgroundThread,
-                   base::Unretained(this)));
-  }
-
-  // Post a task to the background thread to a function which does nothing.
-  // This will force any tasks the database is performing to finish prior to
-  // the reply being sent, since they use the same thread.
-  //
-  // Important! Make sure that methods in FinishInit() only rely on posting
-  // to the background thread, and do not rely upon a reply from the background
-  // thread; this is necessary for this notification to be valid.
-  util::PostTaskToDatabaseThreadAndReply(
-      FROM_HERE,
-      base::Bind(&base::DoNothing),
-      base::Bind(&PerformanceMonitor::NotifyInitialized,
-                 base::Unretained(this)));
-}
-
 void PerformanceMonitor::StartGatherCycle() {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  // Start our periodic gathering of metrics.
-  if (!disable_timer_autostart_for_testing_)
-    timer_.Reset();
-}
-
-void PerformanceMonitor::RegisterForNotifications() {
-  DCHECK(database_logging_enabled_);
-
-  // Extensions
-  registrar_.Add(
-      this,
-      extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
-      content::NotificationService::AllSources());
-  registrar_.Add(this,
-                 extensions::NOTIFICATION_EXTENSION_ENABLED,
-                 content::NotificationService::AllSources());
-  registrar_.Add(this,
-                 extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
-                 content::NotificationService::AllSources());
-  registrar_.Add(this,
-                 extensions::NOTIFICATION_CRX_INSTALLER_DONE,
-                 content::NotificationService::AllSources());
-  registrar_.Add(this,
-                 extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
-                 content::NotificationService::AllSources());
-
-  // Crashes
-  registrar_.Add(this, content::NOTIFICATION_RENDER_WIDGET_HOST_HANG,
-      content::NotificationService::AllSources());
-  registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_CLOSED,
-      content::NotificationService::AllSources());
-
-  // Profiles (for unclean exit)
-  registrar_.Add(this, chrome::NOTIFICATION_PROFILE_ADDED,
-      content::NotificationService::AllSources());
-
-  // Page load times
-  registrar_.Add(this, content::NOTIFICATION_LOAD_STOP,
-      content::NotificationService::AllSources());
-}
-
-// We check if profiles exited cleanly initialization time in case they were
-// loaded prior to PerformanceMonitor's initialization. Later profiles will be
-// checked through the PROFILE_ADDED notification.
-void PerformanceMonitor::CheckForUncleanExits() {
-  DCHECK(database_logging_enabled_);
-
-  std::vector<Profile*> profiles =
-      g_browser_process->profile_manager()->GetLoadedProfiles();
-
-  for (std::vector<Profile*>::const_iterator iter = profiles.begin();
-       iter != profiles.end(); ++iter) {
-    if ((*iter)->GetLastSessionExitType() == Profile::EXIT_CRASHED) {
-      BrowserThread::PostBlockingPoolSequencedTask(
-          Database::kDatabaseSequenceToken,
-          FROM_HERE,
-          base::Bind(&PerformanceMonitor::AddUncleanExitEventOnBackgroundThread,
-                     base::Unretained(this),
-                     (*iter)->GetDebugName()));
-    }
-  }
-}
-
-void PerformanceMonitor::AddUncleanExitEventOnBackgroundThread(
-    const std::string& profile_name) {
-  DCHECK(database_logging_enabled_);
-  std::string database_key = kStateProfilePrefix + profile_name;
-  std::string last_active_string = database_->GetStateValue(database_key);
-
-  // Check if there was no previous time; this should only happen if the profile
-  // was last used prior to PerformanceMonitor's integration. Do nothing in this
-  // case, since the event was prior to the beginning of our recording.
-  if (last_active_string.empty())
-    return;
-
-  base::Time last_active_time;
-  CHECK(StringToTime(last_active_string, &last_active_time));
-
-  scoped_ptr<Event> event =
-      util::CreateUncleanExitEvent(last_active_time, profile_name);
-
-  database_->AddEvent(*event.get());
-}
-
-void PerformanceMonitor::CheckForVersionUpdateOnBackgroundThread() {
-  CHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(database_logging_enabled_);
-
-  chrome::VersionInfo version;
-  DCHECK(version.is_valid());
-  std::string current_version = version.Version();
-
-  std::string previous_version = database_->GetStateValue(kStateChromeVersion);
-
-  // We should never have a current_version which is older than the
-  // previous_version.
-  DCHECK(current_version >= previous_version);
-
-  // If this is the first run, there will not be a stored value for Chrome
-  // version; we insert the current version and will insert an event for the
-  // next update of Chrome. If the previous version is older than the current
-  // version, update the state in the database and insert an event.
-  if (current_version > previous_version) {
-    database_->AddStateValue(kStateChromeVersion, current_version);
-    if (!previous_version.empty()) {
-      scoped_ptr<Event> event = util::CreateChromeUpdateEvent(
-          base::Time::Now(), previous_version, current_version);
-      database_->AddEvent(*event.get());
-    }
-  }
-}
-
-void PerformanceMonitor::AddEvent(scoped_ptr<Event> event) {
-  DCHECK(database_logging_enabled_);
-
-  BrowserThread::PostBlockingPoolSequencedTask(
-      Database::kDatabaseSequenceToken,
-      FROM_HERE,
-      base::Bind(&PerformanceMonitor::AddEventOnBackgroundThread,
-                 base::Unretained(this),
-                 base::Passed(&event)));
-}
-
-void PerformanceMonitor::AddEventOnBackgroundThread(scoped_ptr<Event> event) {
-  database_->AddEvent(*event.get());
-}
-
-void PerformanceMonitor::AddMetricOnBackgroundThread(const Metric& metric) {
-  DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(database_logging_enabled_);
-
-  database_->AddMetric(metric);
-}
-
-void PerformanceMonitor::NotifyInitialized() {
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_PERFORMANCE_MONITOR_INITIALIZED,
-      content::Source<PerformanceMonitor>(this),
-      content::NotificationService::NoDetails());
-
-  initialized_ = true;
-}
-
-void PerformanceMonitor::DoTimedCollections() {
-#if !defined(OS_ANDROID)
-  // The profile list is only useful for the logged events.
-  if (database_logging_enabled_)
-    UpdateLiveProfiles();
-#endif
-
-  GatherMetricsMapOnUIThread();
+  repeating_timer_.Start(FROM_HERE,
+                         base::TimeDelta::FromSeconds(kGatherIntervalInSeconds),

[Devlin, 2014/09/09 02:12:57]

We can probably safely move this constant into this file now.

[tonyg, 2014/09/09 18:28:10]

Done.

+                         this,
+                         &PerformanceMonitor::GatherMetricsMapOnUIThread);
 }
 
 void PerformanceMonitor::GatherMetricsMapOnUIThread() {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
   static int current_update_sequence = 0;
   // Even in the "somewhat" unlikely event this wraps around,
   // it doesn't matter. We just check it for inequality.
   current_update_sequence++;
 
   // Find all render child processes; has to be done on the UI thread.
   for (content::RenderProcessHost::iterator rph_iter =
            content::RenderProcessHost::AllHostsIterator();
        !rph_iter.IsAtEnd(); rph_iter.Advance()) {
     base::ProcessHandle handle = rph_iter.GetCurrentValue()->GetHandle();
     MarkProcessAsAlive(handle, content::PROCESS_TYPE_RENDERER,
                        current_update_sequence);
   }
 
   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&PerformanceMonitor::GatherMetricsMapOnIOThread,
                  base::Unretained(this),
                  current_update_sequence));
 }
 
 void PerformanceMonitor::MarkProcessAsAlive(const base::ProcessHandle& handle,
-                                        int process_type,
-                                        int current_update_sequence) {
+                                            int process_type,
+                                            int current_update_sequence) {
   if (handle == 0) {
     // Process may not be valid yet.
     return;
   }
 
   MetricsMap::iterator process_metrics_iter = metrics_map_.find(handle);
   if (process_metrics_iter == metrics_map_.end()) {
     // If we're not already watching the process, let's initialize it.
     metrics_map_[handle]
         .Initialize(handle, process_type, current_update_sequence);
   } else {
     // If we are watching the process, touch it to keep it alive.
     ProcessMetricsHistory& process_metrics = process_metrics_iter->second;
     process_metrics.set_last_update_sequence(current_update_sequence);
   }
 }
 
-#if !defined(OS_ANDROID)
-void PerformanceMonitor::UpdateLiveProfiles() {
-  std::string time = TimeToString(base::Time::Now());
-  scoped_ptr<std::set<std::string> > active_profiles(
-      new std::set<std::string>());
-
-  for (chrome::BrowserIterator it; !it.done(); it.Next())
-    active_profiles->insert(it->profile()->GetDebugName());
-
-  BrowserThread::PostBlockingPoolSequencedTask(
-      Database::kDatabaseSequenceToken,
-      FROM_HERE,
-      base::Bind(&PerformanceMonitor::UpdateLiveProfilesHelper,
-                 base::Unretained(this),
-                 base::Passed(&active_profiles),
-                 time));
-}
-
-void PerformanceMonitor::UpdateLiveProfilesHelper(
-    scoped_ptr<std::set<std::string> > active_profiles,
-    std::string time) {
-  CHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(database_logging_enabled_);
-
-  for (std::set<std::string>::const_iterator iter = active_profiles->begin();
-       iter != active_profiles->end(); ++iter) {
-    database_->AddStateValue(kStateProfilePrefix + *iter, time);
-  }
-}
-#endif
-
 void PerformanceMonitor::GatherMetricsMapOnIOThread(
     int current_update_sequence) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // Find all child processes (does not include renderers), which has to be
   // done on the IO thread.
   for (content::BrowserChildProcessHostIterator iter; !iter.Done(); ++iter) {
     const content::ChildProcessData& child_process_data = iter.GetData();
     base::ProcessHandle handle = child_process_data.handle;
     MarkProcessAsAlive(handle, child_process_data.process_type,
                        current_update_sequence);
   }
 
   // Add the current (browser) process.
   MarkProcessAsAlive(base::GetCurrentProcessHandle(),
                      content::PROCESS_TYPE_BROWSER, current_update_sequence);
 
-  BrowserThread::PostBlockingPoolSequencedTask(
-      Database::kDatabaseSequenceToken,
-      FROM_HERE,
-      base::Bind(&PerformanceMonitor::StoreMetricsOnBackgroundThread,
-                 base::Unretained(this), current_update_sequence,
-                 performance_data_for_io_thread_));
-}
-
-void PerformanceMonitor::StoreMetricsOnBackgroundThread(
-    int current_update_sequence,
-    const PerformanceDataForIOThread& performance_data_for_io_thread) {
-  CHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  base::Time time_now = base::Time::Now();
-
-  // The timing can be off by kSampleIntervalInSeconds during any one particular
-  // run, but will be correct over time.
-  bool end_of_cycle = time_now >= next_collection_time_;
-  if (end_of_cycle) {
-    next_collection_time_ +=
-        base::TimeDelta::FromSeconds(gather_interval_in_seconds_);
-  }
-
   double cpu_usage = 0.0;
   size_t private_memory_sum = 0;
   size_t shared_memory_sum = 0;
 
   // Update metrics for all watched processes; remove dead entries from the map.
   MetricsMap::iterator iter = metrics_map_.begin();
   while (iter != metrics_map_.end()) {
     ProcessMetricsHistory& process_metrics = iter->second;
     if (process_metrics.last_update_sequence() != current_update_sequence) {
       // Not touched this iteration; let's get rid of it.
       metrics_map_.erase(iter++);
     } else {
       process_metrics.SampleMetrics();
 
-      if (end_of_cycle) {
-        // Gather averages of previously sampled metrics.
-        cpu_usage += process_metrics.GetAverageCPUUsage();
+      // Gather averages of previously sampled metrics.
+      cpu_usage += process_metrics.GetAverageCPUUsage();
 
-        size_t private_memory = 0;
-        size_t shared_memory = 0;
-        process_metrics.GetAverageMemoryBytes(&private_memory, &shared_memory);
-        private_memory_sum += private_memory;
-        shared_memory_sum += shared_memory;
+      size_t private_memory = 0;
+      size_t shared_memory = 0;
+      process_metrics.GetAverageMemoryBytes(&private_memory, &shared_memory);
+      private_memory_sum += private_memory;
+      shared_memory_sum += shared_memory;
 
-        process_metrics.EndOfCycle();
-      }
+      process_metrics.EndOfCycle();
 
       ++iter;
     }
   }
-
-  // Store previously-sampled metrics.
-  if (end_of_cycle && database_logging_enabled_) {
-    if (!metrics_map_.empty()) {
-      database_->AddMetric(Metric(METRIC_CPU_USAGE, time_now, cpu_usage));
-      database_->AddMetric(Metric(METRIC_PRIVATE_MEMORY_USAGE,
-                                  time_now,
-                                  static_cast<double>(private_memory_sum)));
-      database_->AddMetric(Metric(METRIC_SHARED_MEMORY_USAGE,
-                                  time_now,
-                                  static_cast<double>(shared_memory_sum)));
-    }
-
-    database_->AddMetric(
-        Metric(METRIC_NETWORK_BYTES_READ,
-               time_now,
-               static_cast<double>(
-                   performance_data_for_io_thread.network_bytes_read)));
-  }
-
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&PerformanceMonitor::StartGatherCycle,
-                 base::Unretained(this)));
-}
-
-void PerformanceMonitor::BytesReadOnIOThread(const net::URLRequest& request,
-                                             const int bytes_read) {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  if (initialized_ && !request.url().SchemeIsFile())
-    performance_data_for_io_thread_.network_bytes_read += bytes_read;
-}
-
-void PerformanceMonitor::Observe(int type,
-                                 const content::NotificationSource& source,
-                                 const content::NotificationDetails& details) {
-  DCHECK(database_logging_enabled_);
-
-  switch (type) {
-#if defined(ENABLE_EXTENSIONS)
-    case extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED: {
-      AddExtensionEvent(
-          EVENT_EXTENSION_INSTALL,
-          content::Details<const extensions::InstalledExtensionInfo>(details)->
-              extension);
-      break;
-    }
-    case extensions::NOTIFICATION_EXTENSION_ENABLED: {
-      AddExtensionEvent(EVENT_EXTENSION_ENABLE,
-                        content::Details<Extension>(details).ptr());
-      break;
-    }
-    case extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
-      const UnloadedExtensionInfo* info =
-          content::Details<UnloadedExtensionInfo>(details).ptr();
-
-      // Check if the extension was unloaded because it was disabled.
-      if (info->reason == UnloadedExtensionInfo::REASON_DISABLE) {
-        AddExtensionEvent(EVENT_EXTENSION_DISABLE,
-                          info->extension);
-      }
-      break;
-    }
-    case extensions::NOTIFICATION_CRX_INSTALLER_DONE: {
-      const extensions::CrxInstaller* installer =
-          content::Source<extensions::CrxInstaller>(source).ptr();
-      const extensions::Extension* extension =
-          content::Details<Extension>(details).ptr();
-
-      // Check if the reason for the install was due to a successful
-      // extension update. |extension| is NULL in case of install failure.
-      if (extension &&
-          installer->install_cause() == extension_misc::INSTALL_CAUSE_UPDATE) {
-        AddExtensionEvent(EVENT_EXTENSION_UPDATE, extension);
-      }
-      break;
-    }
-    case extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED: {
-      AddExtensionEvent(EVENT_EXTENSION_UNINSTALL,
-                        content::Details<Extension>(details).ptr());
-      break;
-    }
-#endif  // defined(ENABLE_EXTENSIONS)
-    case content::NOTIFICATION_RENDER_WIDGET_HOST_HANG: {
-      std::string url;
-      content::RenderWidgetHost* widget =
-          content::Source<content::RenderWidgetHost>(source).ptr();
-      if (widget->IsRenderView()) {
-        content::RenderViewHost* view = content::RenderViewHost::From(widget);
-        MaybeGetURLFromRenderView(view, &url);
-      }
-      AddEvent(util::CreateRendererFailureEvent(base::Time::Now(),
-                                                EVENT_RENDERER_HANG,
-                                                url));
-      break;
-    }
-    case content::NOTIFICATION_RENDERER_PROCESS_CLOSED: {
-      AddRendererClosedEvent(
-          content::Source<content::RenderProcessHost>(source).ptr(),
-          *content::Details<content::RenderProcessHost::RendererClosedDetails>(
-              details).ptr());
-      break;
-    }
-    case chrome::NOTIFICATION_PROFILE_ADDED: {
-      Profile* profile = content::Source<Profile>(source).ptr();
-      if (profile->GetLastSessionExitType() == Profile::EXIT_CRASHED) {
-        BrowserThread::PostBlockingPoolSequencedTask(
-            Database::kDatabaseSequenceToken,
-            FROM_HERE,
-            base::Bind(
-                &PerformanceMonitor::AddUncleanExitEventOnBackgroundThread,
-                base::Unretained(this),
-                profile->GetDebugName()));
-      }
-      break;
-    }
-    case content::NOTIFICATION_LOAD_STOP: {
-      const content::LoadNotificationDetails* load_details =
-          content::Details<content::LoadNotificationDetails>(details).ptr();
-      if (!load_details)
-        break;
-      BrowserThread::PostBlockingPoolSequencedTask(
-          Database::kDatabaseSequenceToken,
-          FROM_HERE,
-          base::Bind(
-              &PerformanceMonitor::AddMetricOnBackgroundThread,
-              base::Unretained(this),
-              Metric(METRIC_PAGE_LOAD_TIME,
-                     base::Time::Now(),
-                     static_cast<double>(
-                         load_details->load_time.ToInternalValue()))));
-      break;
-    }
-    default: {
-      NOTREACHED();
-      break;
-    }
-  }
-}
-
-#if defined(ENABLE_EXTENSIONS)
-void PerformanceMonitor::AddExtensionEvent(EventType type,
-                                           const Extension* extension) {
-  DCHECK(type == EVENT_EXTENSION_INSTALL ||
-         type == EVENT_EXTENSION_UNINSTALL ||
-         type == EVENT_EXTENSION_UPDATE ||
-         type == EVENT_EXTENSION_ENABLE ||
-         type == EVENT_EXTENSION_DISABLE);
-  AddEvent(util::CreateExtensionEvent(type,
-                                      base::Time::Now(),
-                                      extension->id(),
-                                      extension->name(),
-                                      extension->url().spec(),
-                                      extension->location(),
-                                      extension->VersionString(),
-                                      extension->description()));
-}
-#endif  // defined(ENABLE_EXTENSIONS)
-
-void PerformanceMonitor::AddRendererClosedEvent(
-    content::RenderProcessHost* host,
-    const content::RenderProcessHost::RendererClosedDetails& details) {
-  // We only care if this is an invalid termination.
-  if (details.status == base::TERMINATION_STATUS_NORMAL_TERMINATION ||
-      details.status == base::TERMINATION_STATUS_STILL_RUNNING)
-    return;
-
-  // Determine the type of crash.
-  EventType type =
-      details.status == base::TERMINATION_STATUS_PROCESS_WAS_KILLED ?
-      EVENT_RENDERER_KILLED : EVENT_RENDERER_CRASH;
-
-  // A RenderProcessHost may contain multiple render views - for each valid
-  // render view, extract the url, and append it to the string, comma-separating
-  // the entries.
-  std::string url_list;
-  scoped_ptr<content::RenderWidgetHostIterator> widgets(
-      content::RenderWidgetHost::GetRenderWidgetHosts());
-  while (content::RenderWidgetHost* widget = widgets->GetNextHost()) {
-    if (widget->GetProcess()->GetID() != host->GetID())
-      continue;
-    if (!widget->IsRenderView())
-      continue;
-
-    content::RenderViewHost* view = content::RenderViewHost::From(widget);
-    std::string url;
-    if (!MaybeGetURLFromRenderView(view, &url))
-      continue;
-
-    if (!url_list.empty())
-      url_list += ", ";
-
-    url_list += url;
-  }
-
-  AddEvent(util::CreateRendererFailureEvent(base::Time::Now(), type, url_list));
 }
 
 }  // namespace performance_monitor