[NaCl] Build fix for disable_nacl=1 desktop chrome build.

Review URL: https://codereview.chromium.org/398273002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283715 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/plugin_manager.h b/chrome/browser/extensions/plugin_manager.h
index 56eb9f7..79854ab4 100644
--- a/chrome/browser/extensions/plugin_manager.h
+++ b/chrome/browser/extensions/plugin_manager.h
@@ -35,6 +35,8 @@
  private:
   friend class BrowserContextKeyedAPIFactory<PluginManager>;
 
+#if !defined(DISABLE_NACL)
+
   // We implement some Pepper plug-ins using NaCl to take advantage of NaCl's
   // strong sandbox. Typically, these NaCl modules are stored in extensions
   // and registered here. Not all NaCl modules need to register for a MIME
@@ -50,6 +52,8 @@
 
   extensions::NaClModuleInfo::List::iterator FindNaClModule(const GURL& url);
 
+#endif  // !defined(DISABLE_NACL)
+
   // ExtensionRegistryObserver implementation.
   virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
                                  const Extension* extension) OVERRIDE;