PPAPI/NaCl: Make NaClIPCAdapter transfer handles more generally

ppapi/shared_impl/var.cc

 // 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.
 
 #include "ppapi/shared_impl/var.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
@@ skipping 119 matching lines @@
 StringVar* StringVar::AsStringVar() {
   return this;
 }
 
 PP_VarType StringVar::GetType() const {
   return PP_VARTYPE_STRING;
 }
 
 // static
 PP_Var StringVar::StringToPPVar(const std::string& var) {
-  return StringToPPVar(var.c_str(), var.size());
+  return StringToPPVar(var.c_str(), static_cast<uint32>(var.size()));
 }
 
 // static
 PP_Var StringVar::StringToPPVar(const char* data, uint32 len) {
   scoped_refptr<StringVar> str(new StringVar(data, len));
   if (!str || !IsStringUTF8(str->value()))
     return PP_MakeNull();
   return str->GetPPVar();
 }
 
@@ skipping 37 matching lines @@
     return NULL;
   scoped_refptr<Var> var_object(
       PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
   if (!var_object)
     return NULL;
   return var_object->AsArrayBufferVar();
 }
 
 }  // namespace ppapi