AutoFill auxiliary profiles should be off on non-Mac platforms.

chrome/browser/autofill/personal_data_manager.cc

 // Copyright (c) 2010 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/autofill/personal_data_manager.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/logging.h"
@@ skipping 387 matching lines @@
   return !password_hash_.empty();
 }
 
 const std::vector<AutoFillProfile*>& PersonalDataManager::profiles() {
   // |profile_| is NULL in AutoFillManagerTest.
   if (!profile_)
     return web_profiles_.get();
 
   bool auxiliary_profiles_enabled = profile_->GetPrefs()->GetBoolean(
       prefs::kAutoFillAuxiliaryProfilesEnabled);
+
+#if !defined(OS_MACOSX)
+  DCHECK(!auxiliary_profiles_enabled)
+      << "Auxiliary profiles supported on Mac only";
+#endif
+
   if (auxiliary_profiles_enabled) {
     profiles_.clear();
 
     // Populates |auxiliary_profiles_|.
     LoadAuxiliaryProfiles();
 
     profiles_.insert(profiles_.end(),
         web_profiles_.begin(), web_profiles_.end());
     profiles_.insert(profiles_.end(),
         auxiliary_profiles_.begin(), auxiliary_profiles_.end());
@@ skipping 214 matching lines @@
     }
 
     profiles.push_back(**iter);
   }
 
   if (!merged)
     profiles.push_back(*imported_profile_);
 
   SetProfiles(&profiles);
 }