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

components/pdf/browser/pdf_tab_helper_delegate.h

+// 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.
+
+#ifndef COMPONENTS_PDF_BROWSER_PDF_TAB_HELPER_DELEGATE_H_
+#define COMPONENTS_PDF_BROWSER_PDF_TAB_HELPER_DELEGATE_H_
+
+#include <string>

[Lei Zhang, 2014/08/26 22:41:30]

you need base/strings/string16.h instead

[sadrul, 2014/08/27 00:09:52]

Done.

+
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"

[Lei Zhang, 2014/08/26 22:41:30]

not needed, neither are the web_contents* #includes below

[sadrul, 2014/08/27 00:09:52]

Done.

+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/browser/web_contents_user_data.h"
+#include "ipc/ipc_message.h"
+
+namespace content {
+class WebContents;
+}
+
+namespace pdf {
+
+typedef base::Callback<
+    void(bool /* success */, const base::string16& /* password */)>
+    PasswordDialogClosedCallback;
+
+class PDFTabHelperDelegate {
+ public:
+  virtual ~PDFTabHelperDelegate() {}
+
+  virtual void UpdateLocationBar(content::WebContents* contents) = 0;
+
+  virtual void UpdateContentRestrictions(content::WebContents* contents,
+                                         int content_restrictions) = 0;
+
+  virtual void OnPDFHasUnsupportedFeature(content::WebContents* contents) = 0;
+
+  virtual void OnSaveURL(content::WebContents* contents) = 0;
+
+  virtual void OnShowPDFPasswordDialog(
+      content::WebContents* contents,
+      const base::string16& prompt,
+      const PasswordDialogClosedCallback& callback) = 0;
+};
+
+}  // namespace pdf
+
+#endif  // COMPONENTS_PDF_BROWSER_PDF_TAB_HELPER_DELEGATE_H_