Switch to standard integer types in components/, part 3 of 4.

components/proximity_auth/wire_message_unittest.cc

 // 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.
 
 #include "components/proximity_auth/wire_message.h"
 
+#include <stdint.h>
+
 #include "base/strings/string_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace proximity_auth {
 
 TEST(ProximityAuthWireMessage, Deserialize_EmptyMessage) {
   bool is_incomplete;
   scoped_ptr<WireMessage> message =
       WireMessage::Deserialize(std::string(), &is_incomplete);
   EXPECT_TRUE(is_incomplete);
@@ skipping 210 matching lines @@
   EXPECT_EQ("example payload", message2->payload());
 }
 
 TEST(ProximityAuthWireMessage, Serialize_FailsWithoutPayload) {
   WireMessage message1(std::string(), "example id");
   std::string bytes = message1.Serialize();
   EXPECT_TRUE(bytes.empty());
 }
 
 }  // namespace proximity_auth