Indicate focused state on text buttons with blue outline.

ui/views/controls/button/text_button.cc

 // Copyright (c) 2012 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/button/text_button.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "grit/ui_resources.h"
@@ skipping 451 matching lines @@
   }
 
   return flags;
 }
 
 void TextButtonBase::GetExtraParams(
     ui::NativeTheme::ExtraParams* params) const {
   params->button.checked = false;
   params->button.indeterminate = false;
   params->button.is_default = false;
+  params->button.is_focused = false;
   params->button.has_border = false;
   params->button.classic_state = 0;
   params->button.background_color =
       ui::NativeTheme::instance()->GetSystemColor(
           ui::NativeTheme::kColorId_TextButtonBackgroundColor);
 }
 
 gfx::Rect TextButtonBase::GetContentBounds(int extra_width) const {
   gfx::Insets insets = GetInsets();
   int available_width = width() - insets.width();
@@ skipping 361 matching lines @@
 }
 
 void NativeTextButton::OnPaintFocusBorder(gfx::Canvas* canvas) {
 #if defined(OS_WIN)
   if (HasFocus() && (focusable() || IsAccessibilityFocusable())) {
     gfx::Rect rect(GetLocalBounds());
     rect.Inset(kFocusRectInset, kFocusRectInset);
     canvas->DrawFocusRect(rect);
   }
 #else
-  TextButton::OnPaintFocusBorder(canvas);
+  // Paint nothing, focus will be indicated with a border highlight drawn by
+  // NativeThemeBase::PaintButton.
 #endif
 }
 
 void NativeTextButton::GetExtraParams(
     ui::NativeTheme::ExtraParams* params) const {
   TextButton::GetExtraParams(params);
   params->button.has_border = true;
+#if !defined(OS_WIN)
+  params->button.is_focused = HasFocus() &&

[sky, 2012/06/05 20:25:36]

Add a comment as to why this is ifdef'd.

+      (focusable() || IsAccessibilityFocusable());
+#endif
 }
 
 }  // namespace views