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

chrome/browser/chromeos/drive/fake_file_system.cc

Index: chrome/browser/chromeos/drive/fake_file_system.cc
diff --git a/chrome/browser/chromeos/drive/fake_file_system.cc b/chrome/browser/chromeos/drive/fake_file_system.cc
index faab75677dc1e2ef577d35d8d0736a2a713c3c2d..de08a17d41f9c3ad7fa1bc865436f9cf491b0c71 100644
--- a/chrome/browser/chromeos/drive/fake_file_system.cc
+++ b/chrome/browser/chromeos/drive/fake_file_system.cc
@@ -191,10 +191,14 @@ void FakeFileSystem::GetAvailableSpace(
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
-void FakeFileSystem::GetShareUrl(
-    const base::FilePath& file_path,
-    const GURL& embed_origin,
-    const GetShareUrlCallback& callback) {
+void FakeFileSystem::GetShareUrl(const base::FilePath& file_path,
+                                 const GURL& embed_origin,
+                                 const GetUrlCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+}
+
+void FakeFileSystem::GetDownloadUrl(const base::FilePath& file_path,
+                                    const GetUrlCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }