Give up focus if the focused view becomes unfocusable

chrome/browser/ui/views/toolbar/toolbar_button.cc

 // Copyright 2013 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 "chrome/browser/ui/views/toolbar/toolbar_button.h"
 
 #include "base/bind.h"
 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
 #include "grit/theme_resources.h"
 #include "grit/ui_strings.h"
@@ skipping 14 matching lines @@
       model_(model),
       menu_showing_(false),
       y_position_on_lbuttondown_(0),
       show_menu_factory_(this) {
 }
 
 ToolbarButton::~ToolbarButton() {
 }
 
 void ToolbarButton::Init() {
-  set_focusable(true);
+  SetFocusable(true);
 
   // Provides the hover/pressed style used by buttons in the toolbar.
   views::LabelButtonBorder* border =
       new views::LabelButtonBorder(views::Button::STYLE_BUTTON);
   const int kHoverImages[] = IMAGE_GRID(IDR_TOOLBAR_BUTTON_HOVER);
   border->SetPainter(false, views::Button::STATE_HOVERED,
                      views::Painter::CreateImageGridPainter(
                          kHoverImages));
   const int kPressedImages[] = IMAGE_GRID(IDR_TOOLBAR_BUTTON_PRESSED);
   border->SetPainter(false, views::Button::STATE_PRESSED,
@@ skipping 185 matching lines @@
 
   // Need to explicitly clear mouse handler so that events get sent
   // properly after the menu finishes running. If we don't do this, then
   // the first click to other parts of the UI is eaten.
   SetMouseHandler(NULL);
 
   // Set the state back to normal after the drop down menu is closed.
   if (state_ != STATE_DISABLED)
     SetState(STATE_NORMAL);
 }