Add several new TRACE call and UMA metrics for GetProfile()

chrome/browser/profiles/profile_impl.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/profiles/profile_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/environment.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/path_service.h"
 #include "base/prefs/json_pref_store.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 231 matching lines @@
   return NULL;
 #endif
 }
 
 }  // namespace
 
 // static
 Profile* Profile::CreateProfile(const base::FilePath& path,
                                 Delegate* delegate,
                                 CreateMode create_mode) {
-  TRACE_EVENT_BEGIN1("browser",
-                     "Profile::CreateProfile",
-                     "profile_path",
-                     path.value().c_str());
+  TRACE_EVENT1("browser,startup",
+               "Profile::CreateProfile",
+               "profile_path",
+               path.MaybeAsASCII());
 
   // Get sequenced task runner for making sure that file operations of
   // this profile (defined by |path|) are executed in expected order
   // (what was previously assured by the FILE thread).
   scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner =
       JsonPrefStore::GetTaskRunnerForFile(path,
                                           BrowserThread::GetBlockingPool());
   if (create_mode == CREATE_MODE_ASYNCHRONOUS) {
     DCHECK(delegate);
     CreateProfileDirectory(sequenced_task_runner.get(), path);
   } else if (create_mode == CREATE_MODE_SYNCHRONOUS) {
     if (!base::PathExists(path)) {
-      // TODO(tc): http://b/1094718 Bad things happen if we can't write to the
-      // profile directory.  We should eventually be able to run in this
+      // TODO(rogerta): http://crbug/160553 - Bad things happen if we can't write to

[Alexei Svitkine (slow), 2015/02/19 14:44:59]

Nit: Wrapping.

[rkaplow, 2015/02/19 15:42:51]

Done.

+      // the profile directory.  We should eventually be able to run in this
       // situation.
       if (!base::CreateDirectory(path))
         return NULL;
     }
   } else {
     NOTREACHED();
   }
 
   return new ProfileImpl(
       path, delegate, create_mode, sequenced_task_runner.get());
@@ skipping 107 matching lines @@
     CreateMode create_mode,
     base::SequencedTaskRunner* sequenced_task_runner)
     : path_(path),
       pref_registry_(new user_prefs::PrefRegistrySyncable),
       io_data_(this),
       host_content_settings_map_(NULL),
       last_session_exit_type_(EXIT_NORMAL),
       start_time_(Time::Now()),
       delegate_(delegate),
       predictor_(NULL) {
-  TRACE_EVENT0("browser", "ProfileImpl::ctor")
+  TRACE_EVENT0("browser,startup", "ProfileImpl::ctor")
   DCHECK(!path.empty()) << "Using an empty path will attempt to write " <<
                             "profile files to the root directory!";
 
 #if defined(ENABLE_SESSION_SERVICE)
   create_session_service_timer_.Start(FROM_HERE,
       TimeDelta::FromMilliseconds(kCreateSessionServiceDelayMS), this,
       &ProfileImpl::EnsureSessionServiceCreated);
 #endif
 
   set_is_guest_profile(path == ProfileManager::GetGuestProfilePath());
@@ skipping 234 matching lines @@
   content::BrowserContext::GetDefaultStoragePartition(this)->
       GetDOMStorageContext()->SetSaveSessionStorageOnDisk();
 
   // TODO(wjmaclean): Remove this. crbug.com/420643
   chrome::MigrateProfileZoomLevelPrefs(this);
 
   // The DomDistillerViewerSource is not a normal WebUI so it must be registered
   // as a URLDataSource early.
   RegisterDomDistillerViewerSource(this);
 
-  // Creation has been finished.
-  TRACE_EVENT_END1("browser",
-                   "Profile::CreateProfile",
-                   "profile_path",
-                   path_.value().c_str());
-
 #if defined(OS_CHROMEOS)
   if (chromeos::UserSessionManager::GetInstance()
           ->RestartToApplyPerSessionFlagsIfNeed(this, true)) {
     return;
   }
 #endif
 
   if (delegate_) {
     TRACE_EVENT0("browser", "ProfileImpl::DoFileInit:DelegateOnProfileCreated")
     delegate_->OnProfileCreated(this, true, IsNewProfile());
@@ skipping 156 matching lines @@
     extension_special_storage_policy_ = new ExtensionSpecialStoragePolicy(
         CookieSettings::Factory::GetForProfile(this).get());
   }
   return extension_special_storage_policy_.get();
 #else
   return NULL;
 #endif
 }
 
 void ProfileImpl::OnPrefsLoaded(bool success) {
-  TRACE_EVENT0("browser", "ProfileImpl::OnPrefsLoaded")
+  TRACE_EVENT0("browser", "ProfileImpl::OnPrefsLoaded");
+  SCOPED_UMA_HISTOGRAM_TIMER("Profile.OnPrefsLoadedTime");
   if (!success) {
     if (delegate_)
       delegate_->OnProfileCreated(this, false, false);
     return;
   }
 
   // TODO(mirandac): remove migration code after 6 months (crbug.com/69995).
   if (g_browser_process->local_state())
     chrome::MigrateBrowserPrefs(this, g_browser_process->local_state());
   // TODO(ivankr): remove cleanup code eventually (crbug.com/165672).
@@ skipping 461 matching lines @@
 ProfileImpl::CreateDomainReliabilityMonitor(PrefService* local_state) {
   domain_reliability::DomainReliabilityService* service =
       domain_reliability::DomainReliabilityServiceFactory::GetInstance()->
           GetForBrowserContext(this);
   if (!service)
     return scoped_ptr<domain_reliability::DomainReliabilityMonitor>();
 
   return service->CreateMonitor(
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
 }