Switch to standard integer types in blimp/.

blimp/common/create_blimp_message.h

Index: blimp/common/create_blimp_message.h
diff --git a/blimp/common/create_blimp_message.h b/blimp/common/create_blimp_message.h
index 32dc4458f87a11c2067e9a339147a6fd4553d1c2..8a403d4b2c2e997d9c9f790747bec6a79af67226 100644
--- a/blimp/common/create_blimp_message.h
+++ b/blimp/common/create_blimp_message.h
@@ -5,6 +5,8 @@
 #ifndef BLIMP_COMMON_CREATE_BLIMP_MESSAGE_H_
 #define BLIMP_COMMON_CREATE_BLIMP_MESSAGE_H_
 
+#include <stdint.h>
+
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ -59,7 +61,7 @@ BLIMP_COMMON_EXPORT scoped_ptr<BlimpMessage> CreateStartConnectionMessage(
     int protocol_version);
 
 BLIMP_COMMON_EXPORT scoped_ptr<BlimpMessage> CreateCheckpointAckMessage(
-    int64 checkpoint_id);
+    int64_t checkpoint_id);
 
 }  // namespace blimp