[WIP] Files.app: Remove unused methods in drive_api_util.cc

chrome/browser/drive/drive_api_util.h

Index: chrome/browser/drive/drive_api_util.h
diff --git a/chrome/browser/drive/drive_api_util.h b/chrome/browser/drive/drive_api_util.h
index a57432011d678e98eb5b9bf132c26559872c1da4..8de42810763f25b5d8f32aed63997b9c1a537bb3 100644
--- a/chrome/browser/drive/drive_api_util.h
+++ b/chrome/browser/drive/drive_api_util.h
@@ -88,10 +88,6 @@ void ParseShareUrlAndRun(const google_apis::GetShareUrlCallback& callback,
                          google_apis::GDataErrorCode error,
                          scoped_ptr<base::Value> value);
 
-// Converts ResourceEntry to FileResource.
-scoped_ptr<google_apis::FileResource>
-ConvertResourceEntryToFileResource(const google_apis::ResourceEntry& entry);
-
 // Returns the GData WAPI's Kind of the FileResource.
 google_apis::DriveEntryKind GetKind(
     const google_apis::FileResource& file_resource);