Split infobar_delegate.[cc,h] into separate pieces for the different classes defined within, so that

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/metrics/user_metrics.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/tab_contents/infobar_delegate.h"
+#include "chrome/browser/tab_contents/confirm_infobar_delegate.h"
 #include "chrome/common/jstemplate_builder.h"
 #include "chrome/common/pepper_plugin_registry.h"
 #include "chrome/common/pref_names.h"
 #include "content/browser/plugin_service.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/interstitial_page.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "grit/browser_resources.h"
 #include "grit/generated_resources.h"
@@ skipping 355 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->AddInfoBar(new PDFUnsupportedFeatureConfirmInfoBarDelegate(
       tab, reader_group));
 }