Files.app: Add an private API to get a download URL

chrome/common/extensions/api/file_browser_private.idl

 // 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.
 
 // fileBrowserPrivate API.
 // This is a private API used by the file browser of ChromeOS.
 [platforms=("chromeos"),
  implemented_in="chrome/browser/chromeos/extensions/file_manager/file_browser_private_api_functions.h"]
 namespace fileBrowserPrivate {
 // Type of the mounted volume.
@@ skipping 515 matching lines @@
 
 // |result| true if the length is in the valid range, false otherwise.
 callback ValidatePathNameLengthCallback = void(boolean result);
 
 // |accessToken| OAuth2 access token, or an empty string if failed to fetch.
 callback RequestAccessTokenCallback = void(DOMString accessToken);
 
 // |accessToken| OAuth2 access token, or an empty string if failed to fetch.
 callback RequestWebStoreAccessTokenCallback = void(DOMString accessToken);
 
-// |shareUrl| Share Url for the sharing dialog.
-callback GetShareUrlCallback = void(DOMString shareUrl);
+// |url| Result url.
+callback GetUrlCallback = void(DOMString url);
 
 // |profiles| List of profile information.
 // |runningProfile| ID of the profile that runs the application instance.
 // |showingProfile| ID of the profile that shows the application window.
 callback GetProfilesCallback = void(ProfileInfo[] profiles,
                                     DOMString runningProfile,
                                     DOMString displayProfile);
 
 // |entryUrl| URL of an entry in a normal file system.
 callback ResolveEntriesCallback =
@@ skipping 214 matching lines @@
                                  RequestAccessTokenCallback callback);
 
   // Requests a Webstore API OAuth2 access token.
   // |callback|
   static void requestWebStoreAccessToken(
       RequestWebStoreAccessTokenCallback callback);
 
   // Requests a share dialog url for the specified file.
   // |url| Url for the file.
   // |callback|
-  static void getShareUrl(DOMString url, GetShareUrlCallback callback);
+  static void getShareUrl(DOMString url, GetUrlCallback callback);
+
+  // Requests a download url to download the file contents.
+  // |url| Url for the file.
+  // |callback|
+  static void getDownloadUrl(DOMString url, GetUrlCallback callback);
 
   // Requests to share drive files.
   // |url| URL of a file to be shared.
   // |shareType| Type of access that is getting granted.
   static void requestDriveShare(DOMString url,
                                 DriveShareType shareType,
                                 SimpleCallback callback);
 
   // Requests to install a webstore item.
   // |item_id| The id of the item to install.
@@ skipping 31 matching lines @@
   static void onDriveSyncError(DriveSyncErrorEvent event);
 
   // Dispatched when a profile is added.
   static void onProfileAdded();
 
   // Dispatched when any window moves another desktop.
   // TODO(hirono): Add information which window is moved.
   static void onDesktopChanged();
 };
 };