Block NPAPI plug-ins in Metro mode instead of not loading them at all.

chrome/browser/plugins/plugin_finder.h

Index: chrome/browser/plugins/plugin_finder.h
diff --git a/chrome/browser/plugins/plugin_finder.h b/chrome/browser/plugins/plugin_finder.h
index 3ee80aebb2b46c2ce670f09f83f961147e0b6803..fba610304cc4dfa5b32cf4bd8576a0e289551c43 100644
--- a/chrome/browser/plugins/plugin_finder.h
+++ b/chrome/browser/plugins/plugin_finder.h
@@ -51,7 +51,7 @@ class PluginFinder {
 
   // Finds the plug-in with the given identifier. If found, sets |installer|
   // to the corresponding PluginInstaller and |plugin_metadata| to a copy
-  // of the corresponding PluginMetadata.
+  // of the corresponding PluginMetadata. |installer| may be NULL.
   bool FindPluginWithIdentifier(const std::string& identifier,
                                 PluginInstaller** installer,
                                 scoped_ptr<PluginMetadata>* plugin_metadata);