json_schema_compiler: Use std::vector<char> for binary values.

chromeos/dbus/fake_shill_third_party_vpn_driver_client.h

 // Copyright 2014 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 CHROMEOS_DBUS_FAKE_SHILL_THIRD_PARTY_VPN_DRIVER_CLIENT_H_
 #define CHROMEOS_DBUS_FAKE_SHILL_THIRD_PARTY_VPN_DRIVER_CLIENT_H_
 
 #include <stdint.h>
 
 #include "chromeos/chromeos_export.h"
@@ skipping 24 matching lines @@
       const base::DictionaryValue& parameters,
       const base::Closure& callback,
       const ShillClientHelper::ErrorCallback& error_callback) override;
   void UpdateConnectionState(
       const std::string& object_path_value,
       const uint32_t connection_state,
       const base::Closure& callback,
       const ShillClientHelper::ErrorCallback& error_callback) override;
   void SendPacket(
       const std::string& object_path_value,
-      const std::string& ip_packet,
+      const std::vector<char>& ip_packet,
       const base::Closure& callback,
       const ShillClientHelper::ErrorCallback& error_callback) override;
   ShillThirdPartyVpnDriverClient::TestInterface* GetTestInterface() override;
 
   // ShillThirdPartyVpnDriverClient::TestInterface overrides
   void OnPacketReceived(const std::string& object_path_value,
-                        const std::string& packet) override;
+                        const std::vector<char>& packet) override;
   void OnPlatformMessage(const std::string& object_path_value,
                          uint32_t message) override;
 
  private:
   using ObserverMap = std::map<std::string, ShillThirdPartyVpnObserver*>;
 
   ObserverMap observer_map_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeShillThirdPartyVpnDriverClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_FAKE_SHILL_THIRD_PARTY_VPN_DRIVER_CLIENT_H_