It is time.

ui/base/ime/composition_text.cc

Index: ui/base/ime/composition_text.cc
diff --git a/ui/base/ime/composition_text.cc b/ui/base/ime/composition_text.cc
deleted file mode 100644
index f85bc7487587d7aa85d3c104faec92e302e82064..0000000000000000000000000000000000000000
--- a/ui/base/ime/composition_text.cc
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/base/ime/composition_text.h"
-
-namespace ui {
-
-CompositionText::CompositionText() {
-}
-
-CompositionText::~CompositionText() {
-}
-
-void CompositionText::Clear() {
-  text.clear();
-  underlines.clear();
-  selection = gfx::Range();
-}
-
-}  // namespace ui