Move full hash caching logic to v4_get_hash_protocol_manager

components/safe_browsing_db/util.h

Index: components/safe_browsing_db/util.h
diff --git a/components/safe_browsing_db/util.h b/components/safe_browsing_db/util.h
index d87d63ac6d5cbe25ddb3e8aa49e54daf870ced2d..865e2538c3c09f9cdf0d06e880b6ead9207a6066 100644
--- a/components/safe_browsing_db/util.h
+++ b/components/safe_browsing_db/util.h
@@ -77,6 +77,9 @@ struct ThreatMetadata {
   ThreatMetadata(const ThreatMetadata& other);
   ~ThreatMetadata();
 
+  bool operator==(const ThreatMetadata& other) const;
+  bool operator!=(const ThreatMetadata& other) const;
+
   // Type of blacklisted page. Used on malware and UwS lists.
   // This will be NONE if it wasn't present in the reponse.
   ThreatPatternType threat_pattern_type;