Remove the unused parts of PPB_PDF

components/pdf/browser/pdf_web_contents_helper.cc

 // Copyright (c) 2012 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 "components/pdf/browser/pdf_web_contents_helper.h"
 
 #include "base/bind.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/pdf/browser/open_pdf_in_reader_prompt_client.h"
 #include "components/pdf/browser/pdf_web_contents_helper_client.h"
@@ skipping 30 matching lines @@
 }
 
 bool PDFWebContentsHelper::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PDFWebContentsHelper, message)
     IPC_MESSAGE_HANDLER(PDFHostMsg_PDFHasUnsupportedFeature,
                         OnHasUnsupportedFeature)
     IPC_MESSAGE_HANDLER(PDFHostMsg_PDFSaveURLAs, OnSaveURLAs)
     IPC_MESSAGE_HANDLER(PDFHostMsg_PDFUpdateContentRestrictions,
                         OnUpdateContentRestrictions)
-    IPC_MESSAGE_HANDLER_DELAY_REPLY(PDFHostMsg_PDFModalPromptForPassword,
-                                    OnModalPromptForPassword)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void PDFWebContentsHelper::DidNavigateMainFrame(
     const content::LoadCommittedDetails& details,
     const content::FrameNavigateParams& params) {
   if (open_in_reader_prompt_.get() &&
       open_in_reader_prompt_->ShouldExpire(details)) {
@@ skipping 14 matching lines @@
                                        const content::Referrer& referrer) {
   client_->OnSaveURL(web_contents());
   web_contents()->SaveFrame(url, referrer);
 }
 
 void PDFWebContentsHelper::OnUpdateContentRestrictions(
     int content_restrictions) {
   client_->UpdateContentRestrictions(web_contents(), content_restrictions);
 }
 
-void PDFWebContentsHelper::OnModalPromptForPasswordClosed(
-    IPC::Message* reply_message,
-    bool success,
-    const base::string16& actual_value) {
-  PDFHostMsg_PDFModalPromptForPassword::WriteReplyParams(
-      reply_message, base::UTF16ToUTF8(actual_value));
-  Send(reply_message);
-}
-
-void PDFWebContentsHelper::OnModalPromptForPassword(
-    const std::string& prompt,
-    IPC::Message* reply_message) {
-  base::Callback<void(bool, const base::string16&)> callback =
-      base::Bind(&PDFWebContentsHelper::OnModalPromptForPasswordClosed,
-                 base::Unretained(this),
-                 reply_message);
-  client_->OnShowPDFPasswordDialog(
-      web_contents(), base::UTF8ToUTF16(prompt), callback);
-}
-
 }  // namespace pdf