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

webkit/plugins/npapi/plugin_lib_mac.mm

Index: webkit/plugins/npapi/plugin_lib_mac.mm
diff --git a/webkit/plugins/npapi/plugin_lib_mac.mm b/webkit/plugins/npapi/plugin_lib_mac.mm
index e943736b3be8d37b0ee088dfb0762a3b9a215f37..cdb8ac5068878ceac4cd2852e0b6587e68ce9bad 100644
--- a/webkit/plugins/npapi/plugin_lib_mac.mm
+++ b/webkit/plugins/npapi/plugin_lib_mac.mm
@@ -129,7 +129,6 @@ bool ReadPlistPluginInfo(const FilePath& filename, CFBundleRef bundle,
     info->desc = base::SysNSStringToUTF16(plugin_desc);
   else
     info->desc = UTF8ToUTF16(filename.BaseName().value());
-  info->enabled = WebPluginInfo::USER_ENABLED;
 
   return true;
 }
@@ -223,7 +222,6 @@ bool ReadSTRPluginInfo(const FilePath& filename, CFBundleRef bundle,
     info->desc = UTF8ToUTF16(plugin_descs[0]);
   else
     info->desc = UTF8ToUTF16(filename.BaseName().value());
-  info->enabled = WebPluginInfo::USER_ENABLED;
 
   return true;
 }