Show missing plug-in infobar only if a plug-in is available.

chrome/default_plugin/plugin_impl_aura.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/default_plugin/plugin_impl_aura.h"
 
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "chrome/common/chrome_plugin_messages.h"
@@ skipping 18 matching lines @@
                                      char* argv[]) {
   DVLOG(1) << __FUNCTION__ << " MIME Type : " << mime_type;
   DCHECK(instance != NULL);
 
   if (mime_type == NULL || strlen(mime_type) == 0) {
     DLOG(WARNING) << __FUNCTION__ << " Invalid parameters passed in";
     NOTREACHED();
     return false;
   }
 
-  return PluginInstallerBase::Initialize(module_handle, instance, mime_type,
-                                         argc, argn, argv);
+  PluginInstallerBase::SetRoutingIds(argc, argn, argv);
+  return true;
 }
 
 bool PluginInstallerImpl::NPP_SetWindow(NPWindow* window_info) {
   NOTIMPLEMENTED();
   return true;
 }
 
 void PluginInstallerImpl::Shutdown() {
 }
 
@@ skipping 14 matching lines @@
                                  int32 buffer_length, void* buffer) {
   return true;
 }
 
 void PluginInstallerImpl::URLNotify(const char* url, NPReason reason) {
 }
 
 int16 PluginInstallerImpl::NPP_HandleEvent(void* event) {
   return 0;
 }