arc: Convert more Mojo types to STL

chrome/browser/chromeos/arc/policy/arc_policy_bridge.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_ARC_POLICY_ARC_POLICY_BRIDGE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_POLICY_ARC_POLICY_BRIDGE_H_
 
+#include <string>
+
 #include "base/macros.h"
 #include "components/arc/arc_service.h"
 #include "components/arc/common/policy.mojom.h"
 #include "components/arc/instance_holder.h"
 #include "components/policy/core/common/policy_service.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 namespace policy {
 class PolicyMap;
 }  // namespace policy
@@ skipping 22 matching lines @@
   ~ArcPolicyBridge() override;
 
   void OverrideIsManagedForTesting(bool is_managed);
 
   // InstanceHolder<mojom::PolicyInstance>::Observer overrides.
   void OnInstanceReady() override;
   void OnInstanceClosed() override;
 
   // PolicyHost overrides.
   void GetPolicies(const GetPoliciesCallback& callback) override;
-  void ReportCompliance(const mojo::String& request,
+  void ReportCompliance(const std::string& request,
                         const ReportComplianceCallback& callback) override;
 
   // PolicyService::Observer overrides.
   void OnPolicyUpdated(const policy::PolicyNamespace& ns,
                        const policy::PolicyMap& previous,
                        const policy::PolicyMap& current) override;
 
  private:
   void InitializePolicyService();
 
   mojo::Binding<PolicyHost> binding_;
   policy::PolicyService* policy_service_ = nullptr;
   bool is_managed_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(ArcPolicyBridge);
 };
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_POLICY_ARC_POLICY_BRIDGE_H_