Enable VariationsService on Android.

chrome/browser/metrics/variations/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/variations_service.h"
 
 #include <set>
 
 #include "base/base64.h"
 #include "base/build_time.h"
@@ skipping 233 matching lines @@
   registry->RegisterStringPref(prefs::kVariationsSeed, std::string());
   registry->RegisterInt64Pref(prefs::kVariationsSeedDate,
                               base::Time().ToInternalValue());
   registry->RegisterInt64Pref(prefs::kVariationsLastFetchTime, 0);
   registry->RegisterStringPref(prefs::kVariationsRestrictParameter,
                                std::string());
 }
 
 // static
 VariationsService* VariationsService::Create(PrefService* local_state) {
-// This is temporarily disabled for Android. See http://crbug.com/168224
-#if !defined(GOOGLE_CHROME_BUILD) || defined(OS_ANDROID)
+#if !defined(GOOGLE_CHROME_BUILD)
   // Unless the URL was provided, unsupported builds should return NULL to
   // indicate that the service should not be used.
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kVariationsServerURL))
     return NULL;
 #endif
   return new VariationsService(local_state);
 }
 
 void VariationsService::DoActualFetch() {
@@ skipping 382 matching lines @@
 
 void VariationsService::RecordLastFetchTime() {
   // local_state_ is NULL in tests, so check it first.
   if (local_state_) {
     local_state_->SetInt64(prefs::kVariationsLastFetchTime,
                            base::Time::Now().ToInternalValue());
   }
 }
 
 }  // namespace chrome_variations