Remove obsolete plugin state handling code.

chrome/browser/ui/pdf/chrome_pdf_web_contents_helper_client.cc

 // Copyright 2014 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/ui/pdf/chrome_pdf_web_contents_helper_client.h"
 
 #include "chrome/browser/download/download_stats.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/location_bar/location_bar.h"
-#include "chrome/browser/ui/pdf/pdf_unsupported_feature.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
 
 namespace {
 
 content::WebContents* GetWebContentsToUse(
     content::WebContents* web_contents) {
   // If we're viewing the PDF in a MimeHandlerViewGuest, use its embedder
   // WebContents.
   auto guest_view =
@@ skipping 33 matching lines @@
     int content_restrictions) {
   CoreTabHelper* core_tab_helper =
       CoreTabHelper::FromWebContents(GetWebContentsToUse(contents));
   // |core_tab_helper| is NULL for WebViewGuest.
   if (core_tab_helper)
     core_tab_helper->UpdateContentRestrictions(content_restrictions);
 }
 
 void ChromePDFWebContentsHelperClient::OnPDFHasUnsupportedFeature(
     content::WebContents* contents) {
-  PDFHasUnsupportedFeature(GetWebContentsToUse(contents));
+  // There is no more Adobe pluging for PDF so there is not much we can do in
+  // this case. Maybe simply download the file.
 }
 
 void ChromePDFWebContentsHelperClient::OnSaveURL(
     content::WebContents* contents) {
   RecordDownloadSource(DOWNLOAD_INITIATED_BY_PDF_SAVE);
 }