Implemented drop hander for the Home toolbar button that accepts (only) links

chrome/browser/ui/views/toolbar_view.cc

 // Copyright 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 "chrome/browser/ui/views/toolbar_view.h"
 
 #include "base/i18n/number_formatting.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/command_updater.h"
@@ skipping 228 matching lines @@
           LocationBarView::POPUP : LocationBarView::NORMAL);
 
   reload_ = new ReloadButton(location_bar_,
                              browser_->command_controller()->command_updater());
   reload_->set_triggerable_event_flags(ui::EF_LEFT_MOUSE_BUTTON |
                                        ui::EF_MIDDLE_MOUSE_BUTTON);
   reload_->set_tag(IDC_RELOAD);
   reload_->SetAccessibleName(l10n_util::GetStringUTF16(IDS_ACCNAME_RELOAD));
   reload_->set_id(VIEW_ID_RELOAD_BUTTON);
 
-  home_ = new views::ImageButton(this);
+  home_ = new HomeImageButton(this, browser_);
   home_->set_triggerable_event_flags(ui::EF_LEFT_MOUSE_BUTTON |
                                      ui::EF_MIDDLE_MOUSE_BUTTON);
   home_->set_tag(IDC_HOME);
   home_->SetTooltipText(l10n_util::GetStringUTF16(IDS_TOOLTIP_HOME));
   home_->SetAccessibleName(l10n_util::GetStringUTF16(IDS_ACCNAME_HOME));
   home_->set_id(VIEW_ID_HOME_BUTTON);
 
   browser_actions_ = new BrowserActionsContainer(browser_, this);
 
 #if defined(OS_WIN) && !defined(USE_AURA)
@@ skipping 644 matching lines @@
   app_menu_->SetIcon(GetAppMenuIcon(views::CustomButton::STATE_NORMAL));
   app_menu_->SetHoverIcon(GetAppMenuIcon(views::CustomButton::STATE_HOVERED));
   app_menu_->SetPushedIcon(GetAppMenuIcon(views::CustomButton::STATE_PRESSED));
   SchedulePaint();
 }
 
 void ToolbarView::OnShowHomeButtonChanged() {
   Layout();
   SchedulePaint();
 }