Introduce a separate preference for 'proxy server mode'

chrome/browser/policy/configuration_policy_store_interface.h

 // Copyright (c) 2010 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_POLICY_CONFIGURATION_POLICY_STORE_INTERFACE_H_
 #define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_STORE_INTERFACE_H_
 #pragma once
 
 #include "base/basictypes.h"
 
 class Value;
 
 namespace policy {
 
 enum ConfigurationPolicyType {
   kPolicyHomePage,
   kPolicyHomepageIsNewTabPage,
   kPolicyRestoreOnStartup,
   kPolicyURLsToRestoreOnStartup,
   kPolicyDefaultSearchProviderEnabled,
   kPolicyDefaultSearchProviderName,
   kPolicyDefaultSearchProviderKeyword,
   kPolicyDefaultSearchProviderSearchURL,
   kPolicyDefaultSearchProviderSuggestURL,
   kPolicyDefaultSearchProviderIconURL,
   kPolicyDefaultSearchProviderEncodings,
   kPolicyDisableSpdy,
-  kPolicyProxyServerMode,
+  kPolicyProxyMode,
   kPolicyProxyServer,
   kPolicyProxyPacUrl,
   kPolicyProxyBypassList,
   kPolicyAlternateErrorPagesEnabled,
   kPolicySearchSuggestEnabled,
   kPolicyDnsPrefetchingEnabled,
   kPolicySafeBrowsingEnabled,
   kPolicyMetricsReportingEnabled,
   kPolicyPasswordManagerEnabled,
   kPolicyPasswordManagerAllowShowPasswords,
@@ skipping 23 matching lines @@
   kPolicyChromeOsLockOnIdleSuspend,
   kPolicyAuthSchemes,
   kPolicyDisableAuthNegotiateCnameLookup,
   kPolicyEnableAuthNegotiatePort,
   kPolicyAuthServerWhitelist,
   kPolicyAuthNegotiateDelegateWhitelist,
   kPolicyGSSAPILibraryName,
   kPolicyDisable3DAPIs
 };
 
-static const int kPolicyNoProxyServerMode = 0;
-static const int kPolicyAutoDetectProxyMode = 1;
-static const int kPolicyManuallyConfiguredProxyMode = 2;
-static const int kPolicyUseSystemProxyMode = 3;
+
+// Constants for the "Proxy Server Mode" defined in the policies.
+// Note that these diverge from internal presentation defined in
+// ProxyPrefs::ProxyMode for legacy reasons. The following four
+// PolicyProxyModeType types were not very precise and had overlapping use
+// cases.
+enum PolicyProxyModeType {
+  // Disable Proxy, connect directly.
+  kPolicyNoProxyServerMode = 0,
+  // Auto detect proxy or use specific PAC script if given.
+  kPolicyAutoDetectProxyMode = 1,
+  // Use manually configured proxy servers (fixed servers).
+  kPolicyManuallyConfiguredProxyMode = 2,
+  // Use system proxy server.
+  kPolicyUseSystemProxyMode = 3,
+
+  kPolicyNumberOfProxyModes
+};
 
 // An abstract super class for policy stores that provides a method that can be
 // called by a |ConfigurationPolicyProvider| to specify a policy.
 class ConfigurationPolicyStoreInterface {
  public:
   virtual ~ConfigurationPolicyStoreInterface() {}
 
   // A |ConfigurationPolicyProvider| specifies the value of a policy
   // setting through a call to |Apply|.  The configuration policy pref
   // store takes over the ownership of |value|.
   virtual void Apply(ConfigurationPolicyType policy, Value* value) = 0;
 
  protected:
   ConfigurationPolicyStoreInterface() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyStoreInterface);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_STORE_INTERFACE_H_