Revert 101269 - Store plug-in enabled/disabled state in PluginPrefs instead of WebPluginInfo, to ...

webkit/plugins/webplugininfo.h

Index: webkit/plugins/webplugininfo.h
===================================================================
--- webkit/plugins/webplugininfo.h	(revision 101271)
+++ webkit/plugins/webplugininfo.h	(working copy)
@@ -38,6 +38,32 @@
 
 // Describes an available NPAPI or Pepper plugin.
 struct WebPluginInfo {
+  // Defines the possible enabled state a plugin can have.
+  // The enum values actually represent a 3-bit bitfield :
+  // |PE|PD|U| - where |PE|PD| is policy state and U is user state.
+  //    PE == 1 means the plugin is forced to enabled state by policy
+  //    PD == 1 means the plugin is forced to disabled by policy
+  // PE and PD CAN'T be both 1 but can be both 0 which mean no policy is set.
+  //     U == 1 means the user has disabled the plugin.
+  // Because the plugin user state might have been changed before a policy was
+  // introduced the user state might contradict the policy state in which case
+  // the policy has precedence.
+  enum EnabledStates {
+    USER_ENABLED = 0,
+    USER_DISABLED = 1 << 0,
+    POLICY_DISABLED = 1 << 1,
+    POLICY_ENABLED = 1 << 2,
+    USER_ENABLED_POLICY_UNMANAGED = USER_ENABLED,
+    USER_ENABLED_POLICY_DISABLED = USER_ENABLED| POLICY_DISABLED,
+    USER_ENABLED_POLICY_ENABLED = USER_ENABLED | POLICY_ENABLED,
+    USER_DISABLED_POLICY_UNMANAGED = USER_DISABLED,
+    USER_DISABLED_POLICY_DISABLED = USER_DISABLED | POLICY_DISABLED,
+    USER_DISABLED_POLICY_ENABLED = USER_DISABLED | POLICY_ENABLED,
+    USER_MASK = USER_DISABLED,
+    MANAGED_MASK = POLICY_DISABLED | POLICY_ENABLED,
+    POLICY_UNMANAGED = -1
+  };
+
   enum PluginType {
     PLUGIN_TYPE_NPAPI,
     PLUGIN_TYPE_PEPPER_IN_PROCESS,
@@ -70,10 +96,16 @@
   // A list of all the mime types that this plugin supports.
   std::vector<WebPluginMimeType> mime_types;
 
+  // Enabled state of the plugin. See the EnabledStates enum.
+  int enabled;
+  
   // Plugin type. See the PluginType enum.
   int type;
 };
 
+// Checks whether a plugin is enabled either by the user or by policy.
+bool IsPluginEnabled(const WebPluginInfo& plugin);
+
 // Checks whether a plugin is a Pepper plugin, enabled or disabled.
 bool IsPepperPlugin(const WebPluginInfo& plugin);