Intorduce a separate preference for 'proxy server mode'

chrome/browser/policy/configuration_policy_pref_store.h

Index: chrome/browser/policy/configuration_policy_pref_store.h
diff --git a/chrome/browser/policy/configuration_policy_pref_store.h b/chrome/browser/policy/configuration_policy_pref_store.h
index 820306aa74fdf0c4374d4e420639faf85557be28..40854b28f188a03b9c98e75896ed592285345f02 100644
--- a/chrome/browser/policy/configuration_policy_pref_store.h
+++ b/chrome/browser/policy/configuration_policy_pref_store.h
@@ -56,10 +56,6 @@ class ConfigurationPolicyPrefStore : public PrefStore,
   static const ConfigurationPolicyProvider::PolicyDefinitionList*
       GetChromePolicyDefinitionList();
 
-  // Returns the set of preference paths that can be affected by a proxy
-  // policy.
-  static void GetProxyPreferenceSet(ProxyPreferenceSet* proxy_pref_set);
-
  private:
   // Policies that map to a single preference are handled
   // by an automated converter. Each one of these policies
@@ -84,19 +80,6 @@ class ConfigurationPolicyPrefStore : public PrefStore,
   // to override any values set from stores with a lower priority.
   bool lower_priority_proxy_settings_overridden_;
 
-  // The following are used to track what proxy-relevant policy has been applied
-  // accross calls to Apply to provide a warning if a policy specifies a
-  // contradictory proxy configuration. |proxy_disabled_| is set to true if and
-  // only if the kPolicyNoProxyServer has been applied,
-  // |proxy_configuration_specified_| is set to true if and only if any other
-  // proxy policy other than kPolicyNoProxyServer has been applied.
-  bool proxy_disabled_;
-  bool proxy_configuration_specified_;
-
-  // Set to true if a the proxy mode policy has been set to force Chrome
-  // to use the system proxy.
-  bool use_system_proxy_;
-
   // Returns the map entry that corresponds to |policy| in the map.
   const PolicyToPreferenceMapEntry* FindPolicyInMap(
       ConfigurationPolicyType policy,
@@ -136,6 +119,10 @@ class ConfigurationPolicyPrefStore : public PrefStore,
   // map entries from |prefs_|.
   void FinalizeDefaultSearchPolicySettings();
 
+  // Returns true if the preference at the given path exists and has a non-null
+  // value.
+  bool NonNullValueExists(const std::string& path);
+
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyPrefStore);
 };