Add a policy to disable mounting of external storage.

chrome/browser/policy/configuration_policy_pref_store_unittest.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 <string>
 
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/policy/configuration_policy_handler.h"
 #include "chrome/browser/policy/configuration_policy_pref_store.h"
@@ skipping 267 matching lines @@
 #if defined(OS_CHROMEOS)
 INSTANTIATE_TEST_CASE_P(
     CrosConfigurationPolicyPrefStoreBooleanTestInstance,
     ConfigurationPolicyPrefStoreBooleanTest,
     testing::Values(
         PolicyAndPref(key::kChromeOsLockOnIdleSuspend,
                       prefs::kEnableScreenLock),
         PolicyAndPref(key::kGDataDisabled,
                       prefs::kDisableGData),
         PolicyAndPref(key::kGDataDisabledOverCellular,
-                      prefs::kDisableGDataOverCellular)));
+                      prefs::kDisableGDataOverCellular),
+        PolicyAndPref(key::kExternalStorageDisabled,
+                      prefs::kExternalStorageDisabled)));
 #endif  // defined(OS_CHROMEOS)
 
 // Test cases for integer-valued policy settings.
 class ConfigurationPolicyPrefStoreIntegerTest
     : public ConfigurationPolicyPrefStoreTest,
       public testing::WithParamInterface<PolicyAndPref> {};
 
 TEST_P(ConfigurationPolicyPrefStoreIntegerTest, GetDefault) {
   EXPECT_EQ(PrefStore::READ_NO_VALUE,
             store_->GetValue(GetParam().pref_name(), NULL));
@@ skipping 766 matching lines @@
   policy.Set(key::kDefaultJavaScriptSetting, POLICY_LEVEL_MANDATORY,
              POLICY_SCOPE_USER,
              base::Value::CreateIntegerValue(CONTENT_SETTING_ALLOW));
   provider_.UpdateChromePolicy(policy);
   EXPECT_EQ(PrefStore::READ_OK,
             store_->GetValue(prefs::kManagedDefaultJavaScriptSetting, &value));
   EXPECT_TRUE(base::FundamentalValue(CONTENT_SETTING_ALLOW).Equals(value));
 }
 
 }  // namespace policy