Use scoped_ptr::Pass instead of scoped_ptr::PassAs<T>.

sync/engine/directory_commit_contributor.cc

Index: sync/engine/directory_commit_contributor.cc
diff --git a/sync/engine/directory_commit_contributor.cc b/sync/engine/directory_commit_contributor.cc
index d3e00439e138f663852db2944304f65af280d8a7..f6c27263d8f6e29f0f85f5f31a30fc4454b97bff 100644
--- a/sync/engine/directory_commit_contributor.cc
+++ b/sync/engine/directory_commit_contributor.cc
@@ -22,10 +22,7 @@ DirectoryCommitContributor::~DirectoryCommitContributor() {}
 scoped_ptr<CommitContribution>
 DirectoryCommitContributor::GetContribution(size_t max_entries) {
   return DirectoryCommitContribution::Build(
-      dir_,
-      type_,
-      max_entries,
-      debug_info_emitter_).PassAs<CommitContribution>();
+      dir_, type_, max_entries, debug_info_emitter_);
 }
 
 }  // namespace syncer