Views - dialog button defaultness shouldn't follow focus.

ui/views/controls/button/label_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/label_button.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 163 matching lines @@
   if (is_default == is_default_)
     return;
   is_default_ = is_default;
   ui::Accelerator accel(ui::VKEY_RETURN, ui::EF_NONE);
   is_default_ ? AddAccelerator(accel) : RemoveAccelerator(accel);
 
   // STYLE_BUTTON uses bold text to indicate default buttons.
   if (style_ == STYLE_BUTTON) {
     label_->SetFontList(
         is_default ? cached_bold_font_list_ : cached_normal_font_list_);
-    // Usually this function is called before |this| is attached to a widget,
-    // but in the cases where |this| is already shown, we need to re-layout
-    // because font boldness affects the label's size.
-    if (GetWidget())
-      Layout();
+    InvalidateLayout();
   }
 }
 
 void LabelButton::SetStyle(ButtonStyle style) {
   // All callers currently pass STYLE_BUTTON, and should only call this once, to
   // change from the default style.
   DCHECK_EQ(style, STYLE_BUTTON);
   DCHECK_EQ(style_, STYLE_TEXTBUTTON);
   DCHECK(!GetWidget()) << "Can't change button style after adding to a Widget.";
 
@@ skipping 310 matching lines @@
   GetExtraParams(params);
   return ui::NativeTheme::kHovered;
 }
 
 void LabelButton::ResetCachedPreferredSize() {
   cached_preferred_size_valid_ = false;
   cached_preferred_size_ = gfx::Size();
 }
 
 }  // namespace views