Support gzip-compressed seed data from the variations server.

components/variations/service/variations_service.h

Index: components/variations/service/variations_service.h
diff --git a/components/variations/service/variations_service.h b/components/variations/service/variations_service.h
index e9b786f697fcda39661ece4bb7505dcce16a57d5..45b581e36a331fd286ff91c1c9f6faa381fdc3e7 100644
--- a/components/variations/service/variations_service.h
+++ b/components/variations/service/variations_service.h
@@ -167,7 +167,8 @@ class VariationsService
                          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
@@ -184,6 +185,8 @@ class VariationsService
   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);