Fix PropertyConverter test leak.

ui/aura/mus/property_converter_unittest.cc

 // Copyright 2016 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 "ui/aura/mus/property_converter.h"
 
 #include <stdint.h>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 19 matching lines @@
 DEFINE_WINDOW_PROPERTY_KEY(bool, kTestPropertyKey0, false);
 DEFINE_WINDOW_PROPERTY_KEY(uint8_t, kTestPropertyKey1, 0);
 DEFINE_WINDOW_PROPERTY_KEY(uint16_t, kTestPropertyKey2, 0);
 DEFINE_WINDOW_PROPERTY_KEY(uint32_t, kTestPropertyKey3, 0);
 DEFINE_WINDOW_PROPERTY_KEY(uint64_t, kTestPropertyKey4, 0);
 DEFINE_WINDOW_PROPERTY_KEY(int8_t, kTestPropertyKey5, 0);
 DEFINE_WINDOW_PROPERTY_KEY(int16_t, kTestPropertyKey6, 0);
 DEFINE_WINDOW_PROPERTY_KEY(int32_t, kTestPropertyKey7, 0);
 DEFINE_WINDOW_PROPERTY_KEY(int64_t, kTestPropertyKey8, 0);
 
-DEFINE_WINDOW_PROPERTY_KEY(gfx::Rect*, kTestRectPropertyKey, nullptr);
-DEFINE_WINDOW_PROPERTY_KEY(std::string*, kTestStringPropertyKey, nullptr);
+DEFINE_OWNED_WINDOW_PROPERTY_KEY(gfx::Rect, kTestRectPropertyKey, nullptr);
+DEFINE_OWNED_WINDOW_PROPERTY_KEY(std::string, kTestStringPropertyKey, nullptr);
 
 const char kTestPropertyServerKey0[] = "test-property-server0";
 const char kTestPropertyServerKey1[] = "test-property-server1";
 const char kTestPropertyServerKey2[] = "test-property-server2";
 const char kTestPropertyServerKey3[] = "test-property-server3";
 const char kTestPropertyServerKey4[] = "test-property-server4";
 const char kTestPropertyServerKey5[] = "test-property-server5";
 const char kTestPropertyServerKey6[] = "test-property-server6";
 const char kTestPropertyServerKey7[] = "test-property-server7";
 const char kTestPropertyServerKey8[] = "test-property-server8";
@@ skipping 136 matching lines @@
 
   std::string value_2 = "another test value";
   std::vector<uint8_t> transport_value =
       mojo::ConvertTo<std::vector<uint8_t>>(value_2);
   property_converter.SetPropertyFromTransportValue(
       window.get(), kTestStringPropertyServerKey, &transport_value);
   EXPECT_EQ(value_2, *window->GetProperty(kTestStringPropertyKey));
 }
 
 }  // namespace aura