Replace uses of hash_map in //base

components/safe_browsing_db/v4_get_hash_protocol_manager.h

Index: components/safe_browsing_db/v4_get_hash_protocol_manager.h
diff --git a/components/safe_browsing_db/v4_get_hash_protocol_manager.h b/components/safe_browsing_db/v4_get_hash_protocol_manager.h
index 8a0f855da504051de934ce083b12ba1246e2802e..7d9c2c2aff17e9a3ef47812e0c1446ea7695b15d 100644
--- a/components/safe_browsing_db/v4_get_hash_protocol_manager.h
+++ b/components/safe_browsing_db/v4_get_hash_protocol_manager.h
@@ -14,6 +14,7 @@
 
 #include <memory>
 #include <string>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 
@@ -39,7 +40,7 @@ namespace safe_browsing {
 
 // The matching hash prefixes and corresponding stores, for each full hash
 // generated for a given URL.
-typedef base::hash_map<FullHash, StoreAndHashPrefixes>
+typedef std::unordered_map<FullHash, StoreAndHashPrefixes>
     FullHashToStoreAndHashPrefixesMap;
 
 // ----------------------------------------------------------------
@@ -90,7 +91,7 @@ struct CachedHashPrefixInfo {
 
 // Cached full hashes received from the server for the corresponding hash
 // prefixes.
-typedef base::hash_map<HashPrefix, CachedHashPrefixInfo> FullHashCache;
+typedef std::unordered_map<HashPrefix, CachedHashPrefixInfo> FullHashCache;
 
 // FullHashCallback is invoked when GetFullHashes completes. The parameter is
 // the vector of full hash results. If empty, indicates that there were no
@@ -295,8 +296,8 @@ class V4GetHashProtocolManager : public net::URLFetcherDelegate,
  private:
   // Map of GetHash requests to parameters which created it.
   using PendingHashRequests =
-      base::hash_map<const net::URLFetcher*,
-                     std::unique_ptr<FullHashCallbackInfo>>;
+      std::unordered_map<const net::URLFetcher*,
+                         std::unique_ptr<FullHashCallbackInfo>>;
 
   // The factory that controls the creation of V4GetHashProtocolManager.
   // This is used by tests.