Add last_modified to CopyResource and MoveResource.

chrome/browser/drive/dummy_drive_service.cc

Index: chrome/browser/drive/dummy_drive_service.cc
diff --git a/chrome/browser/drive/dummy_drive_service.cc b/chrome/browser/drive/dummy_drive_service.cc
index 1ad741de09dd90556c2efdc257bfc90c1959a300..de84f8620293111eda2ab822dc9cfe9048123ba7 100644
--- a/chrome/browser/drive/dummy_drive_service.cc
+++ b/chrome/browser/drive/dummy_drive_service.cc
@@ -121,6 +121,7 @@ CancelCallback DummyDriveService::CopyResource(
     const std::string& resource_id,
     const std::string& parent_resource_id,
     const std::string& new_title,
+    const base::Time& last_modified,
     const GetResourceEntryCallback& callback) { return CancelCallback(); }
 
 CancelCallback DummyDriveService::CopyHostedDocument(
@@ -132,6 +133,7 @@ CancelCallback DummyDriveService::MoveResource(
     const std::string& resource_id,
     const std::string& parent_resource_id,
     const std::string& new_title,
+    const base::Time& last_modified,
     const google_apis::GetResourceEntryCallback& callback) {
   return CancelCallback();
 }