Support PolicyWatcher with custom loader for testing

remoting/host/policy_watcher_unittest.cc

 // Copyright 2015 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 "remoting/host/policy_watcher.h"
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 53 matching lines @@
   PolicyWatcherTest() : message_loop_(base::MessageLoop::TYPE_IO) {}
 
   void SetUp() override {
     // We expect no callbacks unless explicitly specified by individual tests.
     EXPECT_CALL(mock_policy_callback_, OnPolicyUpdatePtr(testing::_)).Times(0);
     EXPECT_CALL(mock_policy_callback_, OnPolicyError()).Times(0);
 
     // Retaining a raw pointer to keep control over policy contents.
     policy_loader_ =
         new policy::FakeAsyncPolicyLoader(base::ThreadTaskRunnerHandle::Get());
-    policy_watcher_ =
-        PolicyWatcher::CreateFromPolicyLoader(base::WrapUnique(policy_loader_));
+    policy_watcher_ = PolicyWatcher::CreateFromPolicyLoaderForTesting(
+        base::WrapUnique(policy_loader_));
 
     nat_true_.SetBoolean(key::kRemoteAccessHostFirewallTraversal, true);
     nat_false_.SetBoolean(key::kRemoteAccessHostFirewallTraversal, false);
     nat_one_.SetInteger(key::kRemoteAccessHostFirewallTraversal, 1);
     nat_one_domain_full_.SetInteger(key::kRemoteAccessHostFirewallTraversal, 1);
     nat_one_domain_full_.SetString(key::kRemoteAccessHostDomain, kHostDomain);
     domain_empty_.SetString(key::kRemoteAccessHostDomain, std::string());
     domain_full_.SetString(key::kRemoteAccessHostDomain, kHostDomain);
     SetDefaults(nat_true_others_default_);
     nat_true_others_default_.SetBoolean(key::kRemoteAccessHostFirewallTraversal,
@@ skipping 592 matching lines @@
 
   // And check one, random "boolean" policy to see if the type propagated
   // correctly from policy_templates.json file.
   const policy::Schema boolean_schema =
       schema->GetKnownProperty("RemoteAccessHostRequireCurtain");
   EXPECT_TRUE(boolean_schema.valid());
   EXPECT_EQ(boolean_schema.type(), base::Value::Type::BOOLEAN);
 }
 
 }  // namespace remoting