Reland r101269: Store plug-in enabled/disabled state in PluginPrefs instead of WebPluginInfo.

content/common/pepper_plugin_registry.h

Index: content/common/pepper_plugin_registry.h
diff --git a/content/common/pepper_plugin_registry.h b/content/common/pepper_plugin_registry.h
index ee2404a4dcac0128e56b9b785e32ee9dd5f4de7c..b3b94ab4290ab1581f8156ea0e5d845ae48649b3 100644
--- a/content/common/pepper_plugin_registry.h
+++ b/content/common/pepper_plugin_registry.h
@@ -33,9 +33,6 @@ struct CONTENT_EXPORT PepperPluginInfo {
   // True when this plugin should be run out of process. Defaults to false.
   bool is_out_of_process;
 
-  // Whether the plugin is enabled.  Defaults to true.
-  bool enabled;
-
   FilePath path;  // Internal plugins have "internal-[name]" as path.
   std::string name;
   std::string description;