Add ArcEnabled policy implementation

chrome/browser/policy/policy_browsertest.cc

Index: chrome/browser/policy/policy_browsertest.cc
diff --git a/chrome/browser/policy/policy_browsertest.cc b/chrome/browser/policy/policy_browsertest.cc
index 6817c64effadeedef78139e1ed77c65f9fed9c6f..676299a362ff3b53bba1694479dd56c8f5b0a615 100644
--- a/chrome/browser/policy/policy_browsertest.cc
+++ b/chrome/browser/policy/policy_browsertest.cc
@@ -3942,6 +3942,33 @@ IN_PROC_BROWSER_TEST_F(PolicyTest, UnifiedDesktopEnabledByDefault) {
   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