Update protobuf to r428, part 1.

third_party/protobuf/src/google/protobuf/message_lite.h

Index: third_party/protobuf/src/google/protobuf/message_lite.h
===================================================================
--- third_party/protobuf/src/google/protobuf/message_lite.h	(revision 216642)
+++ third_party/protobuf/src/google/protobuf/message_lite.h	(working copy)
@@ -40,11 +40,17 @@
 #define GOOGLE_PROTOBUF_MESSAGE_LITE_H__
 
 #include <google/protobuf/stubs/common.h>
-#include <google/protobuf/io/coded_stream.h>
 
 namespace google {
 namespace protobuf {
 
+namespace io {
+  class CodedInputStream;
+  class CodedOutputStream;
+  class ZeroCopyInputStream;
+  class ZeroCopyOutputStream;
+}
+
 // Interface to light weight protocol messages.
 //
 // This interface is implemented by all protocol message objects.  Non-lite
@@ -158,6 +164,7 @@
   // followed by IsInitialized().
   virtual bool MergePartialFromCodedStream(io::CodedInputStream* input) = 0;
 
+
   // Serialization ---------------------------------------------------
   // Methods for serializing in protocol buffer format.  Most of these
   // are just simple wrappers around ByteSize() and SerializeWithCachedSizes().