Sniff MIME type for files which have unknown extensions.

chrome/browser/chromeos/extensions/file_manager/private_api_tasks.h

Index: chrome/browser/chromeos/extensions/file_manager/private_api_tasks.h
diff --git a/chrome/browser/chromeos/extensions/file_manager/private_api_tasks.h b/chrome/browser/chromeos/extensions/file_manager/private_api_tasks.h
index ac9c755c3e811734f85d4212cf656ac4c6462c2d..e569bcfe467a56f49ff957bca90b1302f8687018 100644
--- a/chrome/browser/chromeos/extensions/file_manager/private_api_tasks.h
+++ b/chrome/browser/chromeos/extensions/file_manager/private_api_tasks.h
@@ -7,7 +7,10 @@
 #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_PRIVATE_API_TASKS_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_PRIVATE_API_TASKS_H_
 
+#include <vector>
+
 #include "chrome/browser/chromeos/extensions/file_manager/private_api_base.h"
+#include "chrome/browser/chromeos/file_manager/file_tasks.h"
 #include "chrome/common/extensions/api/file_browser_private.h"
 
 namespace extensions {
@@ -42,6 +45,15 @@ class FileBrowserPrivateGetFileTasksFunction
 
   // AsyncExtensionFunction overrides.
   virtual bool RunImpl() OVERRIDE;
+
+ private:
+  void StartSniffingMimeType(
+      scoped_ptr<app_file_handler_util::PathAndMimeTypeSet> path_mime_set,
+      scoped_ptr<std::vector<GURL> > file_urls);
+
+  void OnSniffingMimeTypeCompleted(
+      scoped_ptr<app_file_handler_util::PathAndMimeTypeSet> path_mime_set,
+      scoped_ptr<std::vector<GURL> > file_urls);
 };
 
 // Implements the chrome.fileBrowserPrivate.setDefaultTask method.