Windows: Add an "Open in Adobe Reader" menu item for PDF files in the download shelf.

chrome/browser/ui/pdf/adobe_reader_info_win.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 CHROME_BROWSER_UI_PDF_ADOBE_READER_INFO_WIN_H_
+#define CHROME_BROWSER_UI_PDF_ADOBE_READER_INFO_WIN_H_
+
+#include "base/basictypes.h"
+#include "base/callback_forward.h"
+#include "content/public/common/webplugininfo.h"
+
+class Profile;
+
+struct AdobeReaderPluginInfo {
+  bool is_installed;
+  bool is_enabled;    // Only valid in the context of a given Profile.
+  bool is_secure;     // Whether the plugin is up to date.
+  content::WebPluginInfo plugin_info;
+};
+
+typedef base::Callback<void(const AdobeReaderPluginInfo&)>
+    GetAdobeReaderPluginInfoCallback;
+
+// Fetches information about the Adobe Reader plugin asynchronously.
+// If |profile| is NULL, then the plugin's enable status cannot be
+// determined.
+void GetAdobeReaderPluginInfoAsync(
+    Profile* profile,
+    const GetAdobeReaderPluginInfoCallback& callback);
+
+// Fetches information about the Adobe Reader plugin synchronously.
+// Returns true if the plugin info is not stale.
+// If |profile| is NULL, then the plugin's enable status cannot be
+// determined.
+bool GetAdobeReaderPluginInfo(Profile* profile,
+                              AdobeReaderPluginInfo* reader_info);
+
+// Returns true if Adobe Reader or Adobe Acrobat is the default viewer for the
+// .pdf extension.
+bool IsAdobeReaderDefaultPDFViewer();
+
+// If Adobe Reader or Adobe Acrobat is program associated with the .pdf viewer,
+// return true if the executable is up to date.
+// If Reader/Acrobat is not the default .pdf handler, return false.
+// This function does blocking I/O, since it needs to read from the disk.
+bool IsAdobeReaderUpToDate();
+
+#endif  // CHROME_BROWSER_UI_PDF_ADOBE_READER_INFO_WIN_H_