Add RequestUpdatedSharePath to SmbFileSystem

- Adds RequestUpdatedSharePath helper function to SmbFileSystem.

Bug: 922273
Test: compiles
Change-Id: Ida2043d9f78b585aa70252b7a8b3937dd456d527
Reviewed-on: https://chromium-review.googlesource.com/c/1445235
Commit-Queue: jimmy gong <jimmyxgong@chromium.org>
Auto-Submit: jimmy gong <jimmyxgong@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Reviewed-by: Bailey Berro <baileyberro@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629850}

chrome/browser/chromeos/smb_client/smb_file_system.cc

@@ -577,6 +577,11 @@ void SmbFileSystem::RequestUpdatedCredentials(base::OnceClosure reply) {
   request_creds_callback_.Run(GetMountPath(), GetMountId(), std::move(reply));
 }
 
+void SmbFileSystem::RequestUpdatedSharePath(
+    SmbService::StartReadDirIfSuccessfulCallback reply) {
+  request_path_callback_.Run(GetMountPath(), GetMountId(), std::move(reply));
+}
+
 void SmbFileSystem::HandleRequestReadDirectoryCallback(
     storage::AsyncFileUtil::ReadDirectoryCallback callback,
     const base::ElapsedTimer& metrics_timer,

chrome/browser/chromeos/smb_client/smb_file_system.h

@@ -239,6 +239,11 @@ class SmbFileSystem : public file_system_provider::ProvidedFileSystemInterface,
   // updated, |reply| is executed.
   void RequestUpdatedCredentials(base::OnceClosure reply);
 
+  // Requests updated share path for the mount. Once the share path have been,
+  // updated, |reply| is executed.
+  void RequestUpdatedSharePath(
+      SmbService::StartReadDirIfSuccessfulCallback reply);
+
   void HandleRequestUnmountCallback(
       storage::AsyncFileUtil::StatusCallback callback,
       smbprovider::ErrorType error);