Move the core download files to content.

content/browser/download/download_file.h

Index: content/browser/download/download_file.h
===================================================================
--- content/browser/download/download_file.h	(revision 96793)
+++ content/browser/download/download_file.h	(working copy)
@@ -2,17 +2,17 @@
 // 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_FILE_H_
-#define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
+#ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
+#define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
-#include "chrome/browser/download/download_request_handle.h"
-#include "chrome/browser/download/download_types.h"
 #include "content/browser/download/base_file.h"
+#include "content/browser/download/download_request_handle.h"
+#include "content/browser/download/download_types.h"
 
 struct DownloadCreateInfo;
 class DownloadManager;
@@ -51,4 +51,4 @@
   DISALLOW_COPY_AND_ASSIGN(DownloadFile);
 };
 
-#endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
+#endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_