NaCl SDK: Remove more unused variables in examples

native_client_sdk/src/examples/api/var_dictionary/var_dictionary.cc

 // Copyright (c) 2013 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 <math.h>
 #include <stdio.h>
 #include <string>
 
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/var.h"
 #include "ppapi/cpp/var_dictionary.h"
 
 #ifdef WIN32
 #undef PostMessage
 // Allow 'this' in initializer list
 #pragma warning(disable : 4355)
 #endif
 
 namespace {
 
 static const char kGetCommand[] = "Get";
 static const char kSetCommand[] = "Set";
 static const char kDeleteCommand[] = "Delete";
 static const char kHasKeyCommand[] = "HasKey";
 static const char kGetKeysCommand[] = "GetKeys";
 
-static const char kCommandKey[] = "cmd";
-
 pp::Var MakeResult(const char* cmd, const pp::Var& value,
                    const pp::Var& newDictionary) {
   pp::VarDictionary dict;
   dict.Set("cmd", cmd);
   dict.Set("result", value);
   dict.Set("dict", newDictionary);
   return dict;
 }
 
 }  // namespace
@@ skipping 109 matching lines @@
   virtual ~VarDictionaryModule() {}
 
   virtual pp::Instance* CreateInstance(PP_Instance instance) {
     return new VarDictionaryInstance(instance);
   }
 };
 
 namespace pp {
 Module* CreateModule() { return new VarDictionaryModule(); }
 }  // namespace pp