Sidebar mini tabs UI (views version)....

chrome/browser/ui/cocoa/browser_window_cocoa.mm

 // 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 "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/sys_string_conversions.h"
@@ skipping 595 matching lines @@
 void BrowserWindowCocoa::Observe(NotificationType type,
                                  const NotificationSource& source,
                                  const NotificationDetails& details) {
   switch (type.value) {
     // Only the key window gets a direct toggle from the menu.
     // Other windows hear about it from the notification.
     case NotificationType::BOOKMARK_BAR_VISIBILITY_PREF_CHANGED:
       [controller_ updateBookmarkBarVisibilityWithAnimation:YES];
       break;
     case NotificationType::SIDEBAR_CHANGED:
-      UpdateSidebarForContents(
-          Details<SidebarContainer>(details)->tab_contents());
+      UpdateSidebar(Details<SidebarChangedDetails>(details).ptr());
       break;
     default:
       NOTREACHED();  // we don't ask for anything else!
       break;
   }
 }
 
 void BrowserWindowCocoa::DestroyBrowser() {
   [controller_ destroyBrowser];
 
   // at this point the controller is dead (autoreleased), so
   // make sure we don't try to reference it any more.
 }
 
 NSWindow* BrowserWindowCocoa::window() const {
   return [controller_ window];
 }
 
-void BrowserWindowCocoa::UpdateSidebarForContents(TabContents* tab_contents) {
-  if (tab_contents == browser_->GetSelectedTabContents()) {
-    [controller_ updateSidebarForContents:tab_contents];
+void BrowserWindowCocoa::UpdateSidebar(SidebarChangedDetails* details) {
+  if (details->source->tab() == browser_->GetSelectedTabContentsWrapper()) {
+    [controller_ updateSidebarForTab:details->source->tab()];
   }
 }