Spell success correctly.

dbus/message.h

Index: dbus/message.h
diff --git a/dbus/message.h b/dbus/message.h
index 256a8428c587b36f4fdb7c7ff287a4b07425b41b..f54cb7a65900f04995b82627a792345143c3e32b 100644
--- a/dbus/message.h
+++ b/dbus/message.h
@@ -334,8 +334,8 @@ class CHROME_DBUS_EXPORT MessageWriter {
   // into an array of bytes before communication, since protocol buffers are not
   // a native dbus type. On the receiving size the array of bytes needs to be
   // read and deserialized into a protocol buffer of the correct type. There are
-  // methods in MessageReader to assist in this.  Return true on succes and fail
-  // when serialization is not successful.
+  // methods in MessageReader to assist in this.  Return true on success and
+  // false when serialization fails.
   bool AppendProtoAsArrayOfBytes(const google::protobuf::MessageLite& protobuf);
 
   // Appends the byte wrapped in a variant data container. Variants are