bluetooth: Use BluetoothUUID instead of string when sending uuids

device/bluetooth/bluetooth_uuid.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 DEVICE_BLUETOOTH_BLUETOOTH_UUID_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_UUID_H_
 
 #include <string>
 
-#include "base/pickle.h"
 #include "device/bluetooth/bluetooth_export.h"
-#include "ipc/ipc_param_traits.h"
-
-namespace base {
-class Pickle;
-class PickleIterator;
-}  // namespace base
 
 namespace device {
 
 // Opaque wrapper around a Bluetooth UUID. Instances of UUID represent the
 // 128-bit universally unique identifiers (UUIDs) of profiles and attributes
 // used in Bluetooth based communication, such as a peripheral's services,
 // characteristics, and characteristic descriptors. An instance are
 // constructed using a string representing 16, 32, or 128 bit UUID formats.
 class DEVICE_BLUETOOTH_EXPORT BluetoothUUID {
  public:
@@ skipping 67 matching lines @@
   std::string value_;
 
   // The 128-bit string representation of the UUID.
   std::string canonical_value_;
 };
 
 // This is required by gtest to print a readable output on test failures.
 void DEVICE_BLUETOOTH_EXPORT
 PrintTo(const BluetoothUUID& uuid, std::ostream* out);
 
+struct BluetoothUUIDHash {
+  size_t operator()(const device::BluetoothUUID& uuid) const {
+    return std::hash<std::string>()(uuid.canonical_value());
+  }
+};
+
 }  // namespace device
 
-namespace IPC {
-
-class Message;
-
-// Tell the IPC system how to serialize and deserialize a BluetoothUUID.
-template <>
-struct DEVICE_BLUETOOTH_EXPORT ParamTraits<device::BluetoothUUID> {
-  typedef device::BluetoothUUID param_type;
-  static void GetSize(base::PickleSizer* s, const param_type& p);
-  static void Write(base::Pickle* m, const param_type& p);
-  static bool Read(const base::Pickle* m,
-                   base::PickleIterator* iter,
-                   param_type* r);
-  static void Log(const param_type& p, std::string* l);
-};
-
-}  // namespace IPC
-
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_UUID_H_