Lift the 64K message size limit for postMessage to/from NativeClient.

ppapi/native_client/src/shared/ppapi_proxy/object_serialize.h

 /*
- * Copyright (c) 2011 The Chromium Authors. All rights reserved.
+ * Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_OBJECT_SERIALIZE_H_
 #define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_OBJECT_SERIALIZE_H_
 
 #include "ppapi/c/pp_var.h"
 
 struct NaClSrpcChannel;
 
 namespace ppapi_proxy {
 
-const uint32_t kMaxVarSize = 64 * 1024;
+// The maximum size of a pre-allocated return parameter passed to SRPC.
+const uint32_t kMaxReturnVarSize = 64 * 1024;
 
 // Serialize one PP_Var to the location given in "bytes", using no more
 // than "*length" bytes .  If successful, "*length" reflects the number of
 // bytes written and true is returned.  Otherwise returns false.
 bool SerializeTo(const PP_Var* var, char* bytes, uint32_t* length);
 
 // Serialize a vector of "argc" PP_Vars to a buffer to be allocated by new[].
 // If successful, the address of a buffer is returned and "*length" is set
 // to the number of bytes allocated.  Otherwise, NULL is returned.
 char* Serialize(const PP_Var* vars, uint32_t argc, uint32_t* length);
 
 // Deserialize a vector "bytes" of "length" bytes containing "argc" PP_Vars
 // into the vector of PP_Vars pointed to by "vars".  Returns true if
 // successful, or false otherwise.
 bool DeserializeTo(char* bytes,
                    uint32_t length,
                    uint32_t argc,
                    PP_Var* vars);
 
 }  // namespace ppapi_proxy
 
 #endif  // NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_OBJECT_SERIALIZE_H_