Get rid of synchronous calls to getting plugins to help with http://codereview.chromium.org/79800...

chrome/browser/pdf_unsupported_feature.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/browser/pdf_unsupported_feature.h"
 
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "chrome/browser/chrome_plugin_service_filter.h"
@@ skipping 122 matching lines @@
 void OpenReaderUpdateURL(TabContents* tab) {
   tab->OpenURL(GURL(kReaderUpdateUrl), GURL(), CURRENT_TAB,
                PageTransition::LINK);
 }
 
 // Opens the PDF using Adobe Reader.
 void OpenUsingReader(TabContentsWrapper* tab,
                      const WebPluginInfo& reader_plugin,
                      InfoBarDelegate* old_delegate,
                      InfoBarDelegate* new_delegate) {
-  WebPluginInfo plugin = reader_plugin;
-  // Give the plugin a new version so that the renderer doesn't show the blocked
-  // plugin UI if it's vulnerable, since we already went through the
-  // interstitial.
-  plugin.version = ASCIIToUTF16("11.0.0.0");
-
   ChromePluginServiceFilter::GetInstance()->OverridePluginForTab(
       tab->render_view_host()->process()->id(),
       tab->render_view_host()->routing_id(),
       tab->tab_contents()->GetURL(),
-      plugin);
+      ASCIIToUTF16(PluginGroup::kAdobeReaderGroupName));
   tab->render_view_host()->ReloadFrame();
 
   if (new_delegate) {
     if (old_delegate) {
       tab->infobar_tab_helper()->ReplaceInfoBar(old_delegate, new_delegate);
     } else {
       tab->infobar_tab_helper()->AddInfoBar(new_delegate);
     }
   }
 }
@@ skipping 227 matching lines @@
   for (size_t i = 0; i < plugin_groups.size(); ++i) {
     if (plugin_groups[i].GetGroupName() == reader_group_name) {
       reader_group = &plugin_groups[i];
       break;
     }
   }
 
   tab->infobar_tab_helper()->AddInfoBar(
       new PDFUnsupportedFeatureInfoBarDelegate(tab, reader_group));
 }