Make GetPolicies() return null for unmanaged users

chrome/browser/chromeos/arc/arc_policy_bridge_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 <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/arc/arc_policy_bridge.h"
@@ skipping 12 matching lines @@
 using testing::ReturnRef;
 
 class ArcPolicyBridgeTest : public testing::Test {
  public:
   ArcPolicyBridgeTest() {}
 
   void SetUp() override {
     bridge_service_.reset(new FakeArcBridgeService());
     policy_bridge_.reset(
         new ArcPolicyBridge(bridge_service_.get(), &policy_service_));
+    policy_bridge_->OverrideIsManagedForTesting(true);
 
     EXPECT_CALL(policy_service_,
                 GetPolicies(policy::PolicyNamespace(
                     policy::POLICY_DOMAIN_CHROME, std::string())))
         .WillRepeatedly(ReturnRef(policy_map_));
   }
 
  protected:
   class PolicyStringRunnable
       : public ArcPolicyBridge::GetPoliciesCallback::Runnable {
@@ skipping 20 matching lines @@
 
  private:
   std::unique_ptr<arc::FakeArcBridgeService> bridge_service_;
   std::unique_ptr<arc::ArcPolicyBridge> policy_bridge_;
   policy::PolicyMap policy_map_;
   policy::MockPolicyService policy_service_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcPolicyBridgeTest);
 };
 
+TEST_F(ArcPolicyBridgeTest, UnmanagedTest) {
+  policy_bridge()->OverrideIsManagedForTesting(false);
+  policy_bridge()->GetPolicies(PolicyStringCallback(nullptr));
+}
+
 TEST_F(ArcPolicyBridgeTest, EmptyPolicyTest) {
   // No policy is set, result should be empty.
   policy_bridge()->GetPolicies(PolicyStringCallback("{}"));
 }
 
 TEST_F(ArcPolicyBridgeTest, ArcPolicyTest) {
   policy_map().Set(
       policy::key::kArcPolicy, policy::POLICY_LEVEL_MANDATORY,
       policy::POLICY_SCOPE_USER, policy::POLICY_SOURCE_CLOUD,
       new base::StringValue(
@@ skipping 131 matching lines @@
             "\"lockTaskAllowed\":false,"
             "\"packageName\":\"com.google.android.apps.youtube.kids\","
             "\"permissionGrants\":[]"
           "}],"
         "\"cameraDisabled\":true,"
         "\"defaultPermissionPolicy\":\"GRANT\""
       "}"));
 }
 
 }  // namespace arc