Fix the build; re-add line missed in revert of deleted file.

ui/views/controls/textfield/native_textfield_views_unittest.cc

 // Copyright 2014 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/views/controls/textfield/native_textfield_views.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 61 matching lines @@
     key_received_ = true;
     key_handled_ = views::Textfield::OnKeyReleased(e);
     return key_handled_;
   }
 
   bool key_handled() const { return key_handled_; }
   bool key_received() const { return key_received_; }
 
   void clear() { key_received_ = key_handled_ = false; }
 
+  bool focusable() const { return View::focusable(); }
+
  private:
   bool key_handled_;
   bool key_received_;
 
   DISALLOW_COPY_AND_ASSIGN(TestTextfield);
 };
 
 // A helper class for use with ui::TextInputClient::GetTextFromRange().
 class GetTextHelper {
  public:
@@ skipping 1899 matching lines @@
   // Set text which may fall back to a font which has taller baseline than
   // the default font.
   textfield_->SetText(UTF8ToUTF16("\xE0\xB9\x91"));
   const int new_baseline = textfield_->GetBaseline();
 
   // Regardless of the text, the baseline must be the same.
   EXPECT_EQ(new_baseline, old_baseline);
 }
 
 }  // namespace views