Move UMA to opt-out

chrome/browser/first_run/first_run.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/first_run/first_run.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 27 matching lines @@
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/global_error/global_error_service.h"
 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
-#include "chrome/common/channel_info.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/locale_settings.h"
 #include "chrome/installer/util/master_preferences.h"
 #include "chrome/installer/util/master_preferences_constants.h"
 #include "chrome/installer/util/util_constants.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/prefs/pref_service.h"
 #include "components/search_engines/template_url_service.h"
 #include "components/signin/core/browser/signin_manager.h"
 #include "components/signin/core/browser/signin_tracker.h"
-#include "components/version_info/version_info.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/common/one_shot_event.h"
 #include "google_apis/gaia/gaia_auth_util.h"
@@ skipping 573 matching lines @@
   return internal::g_first_run == internal::FIRST_RUN_TRUE;
 }
 
 #if defined(OS_MACOSX)
 bool IsFirstRunSuppressed(const base::CommandLine& command_line) {
   return command_line.HasSwitch(switches::kNoFirstRun);
 }
 #endif
 
 bool IsMetricsReportingOptIn() {
-#if defined(OS_CHROMEOS)
+  // Metrics reporting is opt-out by default for all platforms and channels.
+  // However, user will have chance to modify metrics reporting state during
+  // FRE.

[sky, 2016/08/26 16:05:34]

FRE may be obvious to you, but I suspect most engineers won't have a clue.
Please avoid the acronym and spell out what FRE is.

   return false;
-#elif defined(OS_ANDROID)
-#error This file shouldn not be compiled on Android.
-#elif defined(OS_MACOSX)
-  return chrome::GetChannel() != version_info::Channel::CANARY;
-#elif defined(OS_LINUX) || defined(OS_BSD) || defined(OS_SOLARIS)
-  // Treat BSD and SOLARIS like Linux to not break those builds, although these
-  // platforms are not officially supported by Chrome.
-  return true;
-#elif defined(OS_WIN)
-  // TODO(jwd): Get this data directly from the download page.
-  // Metrics reporting for Windows is initially enabled on the download page. If
-  // it's opt-in or out can change without changes to Chrome. We should get this
-  // information directly from the download page for it to be accurate.
-  return chrome::GetChannel() == version_info::Channel::STABLE;
-#else
-#error Unsupported platform.
-#endif
 }
 
 void CreateSentinelIfNeeded() {
   if (IsChromeFirstRun())
     internal::CreateSentinel();
 }
 
 std::string GetPingDelayPrefName() {
   return base::StringPrintf("%s.%s",
                             installer::master_preferences::kDistroDict,
@@ skipping 172 matching lines @@
   SetShouldDoPersonalDataManagerFirstRun();
 
   internal::DoPostImportPlatformSpecificTasks(profile);
 }
 
 uint16_t auto_import_state() {
   return g_auto_import_state;
 }
 
 }  // namespace first_run