Update Simulcrypt ECMg

protos/public/BUILD

@@ -18,6 +18,7 @@ filegroup(
 proto_library(
     name = "media_cas_encryption_proto",
     srcs = ["media_cas_encryption.proto"],
+    deps = ["hash_algorithm_proto"],
 )
 
 cc_proto_library(
@@ -34,3 +35,18 @@ cc_proto_library(
     name = "media_cas_cc_proto",
     deps = [":media_cas_proto"],
 )
+
+proto_library(
+    name = "hash_algorithm_proto",
+    srcs = ["hash_algorithm.proto"],
+)
+
+cc_proto_library(
+    name = "hash_algorithm_cc_proto",
+    deps = [":hash_algorithm_proto"],
+)
+
+java_proto_library(
+    name = "hash_algorithm_java_proto",
+    deps = [":hash_algorithm_proto"],
+)