Prefer opening PDF downloads in the browser.

chrome/browser/download/download_target_info.h

Index: chrome/browser/download/download_target_info.h
diff --git a/chrome/browser/download/download_target_info.h b/chrome/browser/download/download_target_info.h
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+// Copyright 2013 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_DOWNLOAD_DOWNLOAD_TARGET_INFO_H_
+#define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TARGET_INFO_H_
+
+#include "base/files/file_path.h"
+#include "content/public/browser/download_danger_type.h"
+#include "content/public/browser/download_item.h"
+
+struct DownloadTargetInfo {
+  DownloadTargetInfo();
+  ~DownloadTargetInfo();
+
+  // Final full target path of the download. Must be non-empty for the remaining
+  // fields to be considered valid. The path is a local file system path. Any
+  // existing file at this path should be overwritten.
+  base::FilePath target_path;
+
+  // Disposition. This will be TARGET_DISPOSITION_PROMPT if the user was
+  // prompted during the process of determining the download target. Otherwise
+  // it will be TARGET_DISPOSITION_OVERWRITE.
+  content::DownloadItem::TargetDisposition target_disposition;
+
+  // Danger type of the download.
+  content::DownloadDangerType danger_type;
+
+  // Suggested intermediate path. The downloaded bytes should be written to this
+  // path until all the bytes are available and the user has accepted a
+  // dangerous download. At that point, the download can be renamed to
+  // |target_path|.
+  base::FilePath intermediate_path;
+
+  // MIME type based on the file type of the download. This may be different
+  // from DownloadItem::GetMimeType() since the latter is based on the server
+  // response, and this one is based on the filename.
+  std::string mime_type;
+
+  // Whether the |target_path| would be handled safely by the browser if it were
+  // to be opened with a file:// URL. This can be used later to decide how file
+  // opens should be handled. The file is considered to be handled safely if the
+  // filetype is supported by the renderer or a sandboxed plug-in.
+  bool is_filetype_handled_securely;
+};
+
+#endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TARGET_INFO_H_