Store prefs::kVariationsSeedDate on a variations server 304.

chrome/browser/metrics/variations/variations_service_unittest.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 <vector>
 
 #include "base/base64.h"
 #include "base/prefs/testing_pref_service.h"
@@ skipping 365 matching lines @@
     EXPECT_TRUE(prefs.FindPreference(prefs::kVariationsSeed)->IsDefaultValue());
 
     net::TestURLFetcher* fetcher = factory.GetFetcherByID(0);
     SimulateServerResponse(non_ok_status_codes[i], fetcher);
     variations_service.OnURLFetchComplete(fetcher);
 
     EXPECT_TRUE(prefs.FindPreference(prefs::kVariationsSeed)->IsDefaultValue());
   }
 }
 
+TEST_F(VariationsServiceTest, SeedDateUpdatedOn304Status) {
+  base::MessageLoop message_loop;
+  content::TestBrowserThread io_thread(content::BrowserThread::IO,
+                                       &message_loop);
+  TestingPrefServiceSimple prefs;
+  VariationsService::RegisterPrefs(prefs.registry());
+
+  VariationsService variations_service(new TestRequestAllowedNotifier, &prefs);
+  net::TestURLFetcherFactory factory;
+  variations_service.DoActualFetch();
+  EXPECT_TRUE(
+      prefs.FindPreference(prefs::kVariationsSeedDate)->IsDefaultValue());
+
+  net::TestURLFetcher* fetcher = factory.GetFetcherByID(0);
+  SimulateServerResponse(net::HTTP_NOT_MODIFIED, fetcher);
+  variations_service.OnURLFetchComplete(fetcher);
+  EXPECT_FALSE(
+      prefs.FindPreference(prefs::kVariationsSeedDate)->IsDefaultValue());
+}
+
 }  // namespace chrome_variations