Remove dead code since PDFWebContentsHelper::ShowOpenInReaderPrompt isn't called anymore.

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/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 =
       extensions::MimeHandlerViewGuest::FromWebContents(web_contents);
   if (guest_view)
     return guest_view->embedder_web_contents();
   return web_contents;
 }
 
 }  // namespace
 
 ChromePDFWebContentsHelperClient::ChromePDFWebContentsHelperClient() {
 }
 
 ChromePDFWebContentsHelperClient::~ChromePDFWebContentsHelperClient() {
 }
 
-void ChromePDFWebContentsHelperClient::UpdateLocationBar(
-    content::WebContents* contents) {
-  Browser* browser = chrome::FindBrowserWithWebContents(contents);
-  if (!browser)
-    return;
-
-  BrowserWindow* window = browser->window();
-  if (!window)
-    return;
-
-  LocationBar* location_bar = window->GetLocationBar();
-  if (!location_bar)
-    return;
-
-  location_bar->UpdateOpenPDFInReaderPrompt();
-}
-
 void ChromePDFWebContentsHelperClient::UpdateContentRestrictions(
     content::WebContents* contents,
     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) {
   // 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);
 }