Add ArcEnabled policy implementation

chrome/browser/policy/policy_browsertest.cc

 // Copyright (c) 2012 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 <stddef.h>
 #include <stdint.h>
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 3924 matching lines @@
   EXPECT_TRUE(display_manager->unified_desktop_enabled());
   policies.Set(key::kUnifiedDesktopEnabledByDefault,
                POLICY_LEVEL_MANDATORY,
                POLICY_SCOPE_USER,
                POLICY_SOURCE_CLOUD,
                new base::FundamentalValue(false),
                NULL);
   UpdateProviderPolicy(policies);
   EXPECT_FALSE(display_manager->unified_desktop_enabled());
 }
+
+// Test ArcEnabled policy mapping.
+IN_PROC_BROWSER_TEST_F(PolicyTest, ArcEnabled) {
+  PrefService* pref = browser()->profile()->GetPrefs();
+  EXPECT_FALSE(pref->GetBoolean(prefs::kArcEnabled));
+
+  // Enable ARC.
+  PolicyMap policies;
+  policies.Set(key::kArcEnabled,
+               POLICY_LEVEL_MANDATORY,
+               POLICY_SCOPE_USER,
+               POLICY_SOURCE_CLOUD,
+               new base::FundamentalValue(true),
+               NULL);
+  UpdateProviderPolicy(policies);
+  EXPECT_TRUE(pref->GetBoolean(prefs::kArcEnabled));
+
+  // Disable ARC.
+  policies.Set(key::kArcEnabled,
+               POLICY_LEVEL_MANDATORY,
+               POLICY_SCOPE_USER,
+               POLICY_SOURCE_CLOUD,
+               new base::FundamentalValue(false),
+               NULL);
+  UpdateProviderPolicy(policies);
+  EXPECT_FALSE(pref->GetBoolean(prefs::kArcEnabled));
+}
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace policy