Use FileDescriptorWatcher in FilePathWatcherKQueue.

components/policy/core/common/configuration_policy_provider_test.h

 // Copyright 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.
 
 #ifndef COMPONENTS_POLICY_CORE_COMMON_CONFIGURATION_POLICY_PROVIDER_TEST_H_
 #define COMPONENTS_POLICY_CORE_COMMON_CONFIGURATION_POLICY_PROVIDER_TEST_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
+#include "build/build_config.h"
 #include "components/policy/core/common/policy_types.h"
 #include "components/policy/core/common/schema.h"
 #include "components/policy/core/common/schema_registry.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#if defined(OS_POSIX)
+#include "base/files/file_descriptor_watcher_posix.h"
+#endif
+
 namespace base {
 class DictionaryValue;
 class ListValue;
 class SequencedTaskRunner;
 class Value;
 }
 
 namespace policy {
 
 class ConfigurationPolicyProvider;
@@ skipping 17 matching lines @@
   // testing::Test:
   void SetUp() override;
   void TearDown() override;
 
  protected:
   bool RegisterSchema(const PolicyNamespace& ns,
                       const std::string& schema);
 
   SchemaRegistry schema_registry_;
 
-  // Create an actual IO loop (needed by FilePathWatcher).
+  // Needed by FilePathWatcher, which is used by ConfigDirPolicyLoader and
+  // PolicyLoaderMac.
   base::MessageLoopForIO loop_;
+#if defined(OS_POSIX)
+  base::FileDescriptorWatcher file_descriptor_watcher_;
+#endif
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PolicyTestBase);
 };
 
 // An interface for creating a test policy provider and creating a policy
 // provider instance for testing. Used as the parameter to the abstract
 // ConfigurationPolicyProviderTest below.
 class PolicyProviderTestHarness {
  public:
@@ skipping 97 matching lines @@
   Configuration3rdPartyPolicyProviderTest();
   virtual ~Configuration3rdPartyPolicyProviderTest();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Configuration3rdPartyPolicyProviderTest);
 };
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_CONFIGURATION_POLICY_PROVIDER_TEST_H_