gdata: Remove use of FindEntryByPathSync() fromMoveOnUIThread()

chrome/browser/chromeos/gdata/gdata_file_system.h

Index: chrome/browser/chromeos/gdata/gdata_file_system.h
diff --git a/chrome/browser/chromeos/gdata/gdata_file_system.h b/chrome/browser/chromeos/gdata/gdata_file_system.h
index 1545c858693fe769ddd6ef7d8b5ce948efacadbd..0ba3ef4e288195b1da07a12637c82f3e510dbd48 100644
--- a/chrome/browser/chromeos/gdata/gdata_file_system.h
+++ b/chrome/browser/chromeos/gdata/gdata_file_system.h
@@ -358,6 +358,7 @@ class GDataFileSystem : public GDataFileSystemInterface,
   // "foo (2).txt"
   //
   // Can be called from UI thread. |callback| is run on the calling thread.
+  // |callback| must not be null.
   void Rename(const FilePath& file_path,
               const FilePath::StringType& new_name,
               const FileMoveCallback& callback);
@@ -747,6 +748,13 @@ class GDataFileSystem : public GDataFileSystemInterface,
     const FileOperationCallback& callback,
     scoped_ptr<EntryInfoPairResult> result);
 
+  // Part of MoveOnUIThread(). Called after GetEntryInfoPairByPaths() is
+  // complete. |callback| must not be null.
+  void MoveOnUIThreadAfterGetEntryInfoPair(
+    const FilePath& dest_file_path,
+    const FileOperationCallback& callback,
+    scoped_ptr<EntryInfoPairResult> result);
+
   // Part of RemoveOnUIThread(). Called after GetEntryInfoByPath() is
   // complete.
   void RemoveOnUIThreadAfterGetEntryInfo(