VariationsService now supports wildcard in min/max version

chrome/browser/metrics/variations_service.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/metrics/variations_service.h"
 
 #include <set>
 
 #include "base/base64.h"
 #include "base/build_time.h"
@@ skipping 222 matching lines @@
 bool VariationsService::CheckStudyVersion(
     const chrome_variations::Study_Filter& filter,
     const std::string& version_string) {
   const Version version(version_string);
   if (!version.IsValid()) {
     NOTREACHED();
     return false;
   }
 
   if (filter.has_min_version()) {
-    const Version min_version(filter.min_version());
-    if (!min_version.IsValid())
-      return false;
-    if (version.CompareTo(min_version) < 0)
+    if (version.CompareToWildcard(filter.min_version()) < 0)
       return false;
   }
 
   if (filter.has_max_version()) {
-    const Version max_version(filter.max_version());
-    if (!max_version.IsValid())
-      return false;
-    if (version.CompareTo(max_version) > 0)
+    if (version.CompareToWildcard(filter.max_version()) > 0)
       return false;
   }
 
   return true;
 }
 
 // static
 bool VariationsService::CheckStudyStartDate(
     const chrome_variations::Study_Filter& filter,
     const base::Time& date_time) {
@@ skipping 108 matching lines @@
       experiments_helper::AssociateGoogleVariationIDForce(study.name(),
                                                           experiment.name(),
                                                           variation_id);
     }
   }
 
   trial->SetForced();
   if (IsStudyExpired(study, reference_date))
     trial->Disable();
 }