Update third_party/protobuf to protobuf-v3.0.0-beta-3

third_party/protobuf/src/google/protobuf/generated_message_util.h

Index: third_party/protobuf/src/google/protobuf/generated_message_util.h
diff --git a/third_party/protobuf/src/google/protobuf/generated_message_util.h b/third_party/protobuf/src/google/protobuf/generated_message_util.h
index 813fb43dfb21d39d02c819e7646e7a5f2b5442b9..36f18da940b3831808941118c5156a2353d7a0bc 100644
--- a/third_party/protobuf/src/google/protobuf/generated_message_util.h
+++ b/third_party/protobuf/src/google/protobuf/generated_message_util.h
@@ -42,8 +42,8 @@
 #include <string>
 
 #include <google/protobuf/stubs/once.h>
-
 #include <google/protobuf/stubs/common.h>
+
 namespace google {
 
 namespace protobuf {
@@ -63,6 +63,8 @@ namespace internal {
 #undef DEPRECATED_PROTOBUF_FIELD
 #define PROTOBUF_DEPRECATED
 
+#define PROTOBUF_DEPRECATED_ATTR
+
 
 // Constants for special floating point values.
 LIBPROTOBUF_EXPORT double Infinity();