Implement an AutoLaunch experiment for Chrome for certain brand codes.

chrome/browser/chrome_browser_main.cc

 // Copyright (c) 2011 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 <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 11 matching lines @@
 #include "base/string_piece.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/threading/platform_thread.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/about_flags.h"
+#include "chrome/browser/auto_launch_trial.h"
 #include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/browser/browser_process_impl.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/chrome_browser_main_extra_parts.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/extensions/default_apps_trial.h"
 #include "chrome/browser/extensions/extension_protocols.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extensions_startup.h"
 #include "chrome/browser/first_run/first_run_browser_process.h"
@@ skipping 1047 matching lines @@
   // Create a 100% field trial based on the brand code.
   if (LowerCaseEqualsASCII(brand, "ecdb")) {
     base::FieldTrialList::CreateFieldTrial(kDefaultAppsTrialName,
                                            kDefaultAppsTrialNoAppsGroup);
   } else if (LowerCaseEqualsASCII(brand, "ecda")) {
     base::FieldTrialList::CreateFieldTrial(kDefaultAppsTrialName,
                                            kDefaultAppsTrialWithAppsGroup);
   }
 }
 
+void ChromeBrowserMainParts::AutoLaunchChromeFieldTrial() {
+  std::string brand;
+  google_util::GetBrand(&brand);
+
+  // Create a 100% field trial based on the brand code.
+  if (LowerCaseEqualsASCII(brand, "rngp")) {
+    base::FieldTrialList::CreateFieldTrial(kAutoLaunchTrialName,
+                                           kAutoLaunchTrialAutoLaunchGroup);
+  } else if (LowerCaseEqualsASCII(brand, "rngq")) {
+    base::FieldTrialList::CreateFieldTrial(kAutoLaunchTrialName,
+                                           kAutoLaunchTrialControlGroup);
+  }
+}
+
 // ChromeBrowserMainParts: |SetupMetricsAndFieldTrials()| related --------------
 
 // Initializes the metrics service with the configuration for this process,
 // returning the created service (guaranteed non-NULL).
 MetricsService* ChromeBrowserMainParts::InitializeMetrics(
     const CommandLine& parsed_command_line,
     const PrefService* local_state) {
 #if defined(OS_WIN)
   if (parsed_command_line.HasSwitch(switches::kChromeFrame))
     MetricsLog::set_version_extension("-F");
@@ skipping 40 matching lines @@
   // shoud not be performed.
   if (!proxy_policy_is_set)
     ProxyConnectionsFieldTrial();
   prerender::ConfigurePrefetchAndPrerender(parsed_command_line());
   InstantFieldTrial::Activate();
   SpdyFieldTrial();
   ConnectBackupJobsFieldTrial();
   WarmConnectionFieldTrial();
   PredictorFieldTrial();
   DefaultAppsFieldTrial();
+  AutoLaunchChromeFieldTrial();
   sync_promo_trial::Activate();
 }
 
 // -----------------------------------------------------------------------------
 // TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.
 
 #if defined(OS_CHROMEOS)
 // Allows authenticator to be invoked without adding refcounting. The instances
 // will delete themselves upon completion.
 DISABLE_RUNNABLE_METHOD_REFCOUNT(StubLogin);
@@ skipping 994 matching lines @@
   if (env->GetVar(chrome::kPreReadEnvironmentVariable, &pre_read) &&
       (pre_read == "0" || pre_read == "1")) {
     std::string uma_name(name);
     uma_name += "_PreRead";
     uma_name += pre_read == "1" ? "Enabled" : "Disabled";
     AddPreReadHistogramTime(uma_name.c_str(), time);
   }
 #endif
 #endif
 }