Activate prepopulated fieldtrials

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 <set>
 #include <string>
 #include <vector>
 
@@ skipping 615 matching lines @@
 
     // Create field trials without activating them, so that this behaves in a
     // consistent manner with field trials created from the server.
     bool result = base::FieldTrialList::CreateTrialsFromString(
         command_line->GetSwitchValueASCII(switches::kForceFieldTrials),
         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
         unforceable_field_trials);
     CHECK(result) << "Invalid --" << switches::kForceFieldTrials
                   << " list specified.";
   }
+
+#if !defined(GOOGLE_CHROME_BUILD)
+  if (!command_line->HasSwitch(switches::kDisableFieldTrialTestingConfig) &&
+      !command_line->HasSwitch(switches::kForceFieldTrials) &&
+      !command_line->HasSwitch(switches::kVariationsServerURL)) {
+    bool result = chrome_variations::AssociateDefaultFieldTrialConfig();
+    CHECK(result) << " Enabling field trial testing configuration failed.";
+  }
+#endif  // !defined(GOOGLE_CHROME_BUILD)
+
   if (command_line->HasSwitch(switches::kForceVariationIds)) {
     // Create default variation ids which will always be included in the
     // X-Client-Data request header.
     variations::VariationsHttpHeaderProvider* provider =
         variations::VariationsHttpHeaderProvider::GetInstance();
     bool result = provider->SetDefaultVariationIds(
         command_line->GetSwitchValueASCII(switches::kForceVariationIds));
     CHECK(result) << "Invalid --" << switches::kForceVariationIds
                   << " list specified.";
     metrics->AddSyntheticTrialObserver(provider);
@@ skipping 1134 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);
 }