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

chrome/browser/chromeos/drive/file_system.h

Index: chrome/browser/chromeos/drive/file_system.h
diff --git a/chrome/browser/chromeos/drive/file_system.h b/chrome/browser/chromeos/drive/file_system.h
index f16c7bf482d4396d1e45f009a069ef093a2207e6..dcce8cb3763c87deb9ceeeb14d85887a50debf12 100644
--- a/chrome/browser/chromeos/drive/file_system.h
+++ b/chrome/browser/chromeos/drive/file_system.h
@@ -141,10 +141,11 @@ class FileSystem : public FileSystemInterface,
       const FileOperationCallback& completion_callback) OVERRIDE;
   virtual void GetAvailableSpace(
       const GetAvailableSpaceCallback& callback) OVERRIDE;
-  virtual void GetShareUrl(
-      const base::FilePath& file_path,
-      const GURL& embed_origin,
-      const GetShareUrlCallback& callback) OVERRIDE;
+  virtual void GetShareUrl(const base::FilePath& file_path,
+                           const GURL& embed_origin,
+                           const GetUrlCallback& callback) OVERRIDE;
+  virtual void GetDownloadUrl(const base::FilePath& file_path,
+                              const GetUrlCallback& callback) OVERRIDE;
   virtual void GetMetadata(
       const GetFilesystemMetadataCallback& callback) OVERRIDE;
   virtual void MarkCacheFileAsMounted(
@@ -223,10 +224,10 @@ class FileSystem : public FileSystemInterface,
   // and then uses it to ask for the share url. |callback| must not be null.
   void GetShareUrlAfterGetResourceEntry(const base::FilePath& file_path,
                                         const GURL& embed_origin,
-                                        const GetShareUrlCallback& callback,
+                                        const GetUrlCallback& callback,
                                         ResourceEntry* entry,
                                         FileError error);
-  void OnGetResourceEntryForGetShareUrl(const GetShareUrlCallback& callback,
+  void OnGetResourceEntryForGetShareUrl(const GetUrlCallback& callback,
                                         google_apis::GDataErrorCode status,
                                         const GURL& share_url);
   // Part of AddPermission.
@@ -237,6 +238,17 @@ class FileSystem : public FileSystemInterface,
       ResourceEntry* entry,
       FileError error);
 
+  // Part of GetDownloadUrl. Resolves the resource entry to get the resource it,

[hashimoto, 2014/07/09 07:48:57]

s/it/ID/?

+  // and then uses it to ask for the share url. |callback| must not be null.
+  void GetDownloadUrlAfterGetResourceEntry(const base::FilePath& file_path,
+                                           const GetUrlCallback& callback,
+                                           ResourceEntry* entry,
+                                           FileError error);
+  void OnGetFileResourceForGetDownloadUrl(
+      const GetUrlCallback& callback,
+      google_apis::GDataErrorCode status,
+      scoped_ptr<google_apis::FileResource> file_resource);
+
   // Part of OnDriveSyncError().
   virtual void OnDriveSyncErrorAfterGetFilePath(
       file_system::DriveSyncErrorType type,