pdf: Create a separate component for using the pdf pepper plugin.

chrome/browser/ui/pdf/chrome_pdf_tab_helper_delegate.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_tab_helper_delegate.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"
+
+ChromePDFTabHelperDelegate::ChromePDFTabHelperDelegate() {
+}
+
+ChromePDFTabHelperDelegate::~ChromePDFTabHelperDelegate() {
+}
+
+void ChromePDFTabHelperDelegate::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 ChromePDFTabHelperDelegate::UpdateContentRestrictions(
+    content::WebContents* contents,
+    int content_restrictions) {
+  CoreTabHelper* core_tab_helper = CoreTabHelper::FromWebContents(contents);
+  // |core_tab_helper| is NULL for WebViewGuest.
+  if (core_tab_helper)
+    core_tab_helper->UpdateContentRestrictions(content_restrictions);
+}
+
+void ChromePDFTabHelperDelegate::OnPDFHasUnsupportedFeature(
+    content::WebContents* contents) {
+  PDFHasUnsupportedFeature(contents);
+}
+
+void ChromePDFTabHelperDelegate::OnSaveURL(content::WebContents* contents) {
+  RecordDownloadSource(DOWNLOAD_INITIATED_BY_PDF_SAVE);
+}
+
+void ChromePDFTabHelperDelegate::OnShowPDFPasswordDialog(
+    content::WebContents* contents,
+    const base::string16& prompt,
+    const pdf::PasswordDialogClosedCallback& callback) {
+  ShowPDFPasswordDialog(contents, prompt, callback);
+}