Support gzip-compressed seed data from the variations server.

components/variations/service/variations_service.h

 // 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.
 
 #ifndef COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_SERVICE_H_
 #define COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_SERVICE_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 149 matching lines @@
   // Starts the fetching process once, where |OnURLFetchComplete| is called with
   // the response.
   virtual void DoActualFetch();
 
   // Stores the seed to prefs. Set as virtual and protected so that it can be
   // overridden by tests.
   virtual bool StoreSeed(const std::string& seed_data,
                          const std::string& seed_signature,
                          const std::string& country_code,
                          const base::Time& date_fetched,
-                         bool is_delta_compressed);
+                         bool is_delta_compressed,
+                         bool is_gzip_compressed);
 
   // Creates the VariationsService with the given |local_state| prefs service
   // and |state_manager|. Does not take ownership of |state_manager|. Caller
   // should ensure that |state_manager| is valid for the lifetime of this class.
   // Use the |Create| factory method to create a VariationsService.
   VariationsService(
       scoped_ptr<VariationsServiceClient> client,
       scoped_ptr<web_resource::ResourceRequestAllowedNotifier> notifier,
       PrefService* local_state,
       metrics::MetricsStateManager* state_manager,
       const UIStringOverrider& ui_string_overrider);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, Observer);
   FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, SeedStoredWhenOKStatus);
   FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, SeedNotStoredWhenNonOKStatus);
+  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, RequestGzipCompressedSeed);
+  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, InstanceManipulations);
   FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, SeedDateUpdatedOn304Status);
   FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest,
                            LoadPermanentConsistencyCountry);
   FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, CountryHeader);
   FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, GetVariationsServerURL);
 
   // Set of different possible values to report for the
   // Variations.LoadPermanentConsistencyCountryResult histogram. This enum must
   // be kept consistent with its counterpart in histograms.xml.
   enum LoadPermanentConsistencyCountryResult {
@@ skipping 109 matching lines @@
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<VariationsService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VariationsService);
 };
 
 }  // namespace variations
 
 #endif  // COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_SERVICE_H_