Rename DesktopEngagement* to DesktopSessionDuration*.

chrome/browser/chrome_browser_main.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/chrome_browser_main.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 257 matching lines @@
 #endif
 
 #if defined(USE_AURA)
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "content/public/common/mojo_shell_connection.h"
 #include "services/shell/runner/common/client_util.h"
 #endif
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || \
     (defined(OS_LINUX) && !defined(OS_CHROMEOS))
-#include "chrome/browser/metrics/desktop_engagement/desktop_engagement_service.h"
+#include "chrome/browser/metrics/desktop_session_duration/desktop_session_duration_tracker.h"
 #endif
 
 using content::BrowserThread;
 
 namespace {
 
 // A provider of Geolocation services to override AccessTokenStore.
 class ChromeGeolocationDelegate : public device::GeolocationDelegate {
  public:
   ChromeGeolocationDelegate() = default;
@@ skipping 623 matching lines @@
       // Don't enable instrumentation.
       break;
   }
 
   // Register a synthetic field trial for the sampling profiler configuration
   // that was already chosen.
   sampling_profiler_config_.RegisterSyntheticFieldTrial();
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || \
     (defined(OS_LINUX) && !defined(OS_CHROMEOS))
-  metrics::DesktopEngagementService::Initialize();
+  metrics::DesktopSessionDurationTracker::Initialize();
 #endif
 
 #if defined(OS_WIN)
   // Cleanup the PreRead field trial registry key.
   // TODO(fdoray): Remove this when M56 hits stable.
   const base::string16 pre_read_field_trial_registry_path =
       BrowserDistribution::GetDistribution()->GetRegistryPath() +
       L"\\PreReadFieldTrial";
   base::win::RegKey(HKEY_CURRENT_USER,
                     pre_read_field_trial_registry_path.c_str(), KEY_SET_VALUE)
@@ skipping 1274 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(OS_ANDROID)
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }