Makes NativeTextButton take focus.

views/controls/button/text_button.cc

 // 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 "views/controls/button/text_button.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
@@ skipping 778 matching lines @@
 #if defined(OS_WIN)
   // Windows will like to show its own colors.
   // Halos and such are ignored as they are always set by specific calls.
   color_enabled_ = skia::COLORREFToSkColor(GetSysColor(COLOR_BTNTEXT));
   color_disabled_ = skia::COLORREFToSkColor(GetSysColor(COLOR_GRAYTEXT));
   color_hover_ = color_ = color_enabled_;
 #endif
   set_border(new TextButtonNativeThemeBorder(this));
   set_ignore_minimum_size(false);
   set_alignment(ALIGN_CENTER);
+  set_focusable(true);
 }
 
 gfx::Size NativeTextButton::GetMinimumSize() {
   return GetPreferredSize();
 }
 
 std::string NativeTextButton::GetClassName() const {
   return kViewClassName;
 }
 
 }  // namespace views