[Mac] Re-enable pinned tabs; add support for mini-tabs and phantom tabs.

chrome/browser/sessions/session_service.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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 "build/build_config.h"
 
 #include "chrome/browser/sessions/session_service.h"
 
 #include <limits>
 
 #include "base/callback.h"
@@ skipping 956 matching lines @@
         GetWindow(payload.id, windows)->type =
             BrowserTypeForWindowType(
                 static_cast<WindowType>(payload.index));
         break;
       }
 
       case kCommandSetPinnedState: {
         PinnedStatePayload payload;
         if (!command->GetPayload(&payload, sizeof(payload)))
           return true;
-        if (browser_defaults::kEnablePinnedTabs)
-          GetTab(payload.tab_id, tabs)->pinned = payload.pinned_state;
+        GetTab(payload.tab_id, tabs)->pinned = payload.pinned_state;
         break;
       }
 
       case kCommandSetAppExtensionID: {
         SessionID::id_type tab_id;
         std::string app_extension_id;
         if (!RestoreSetTabAppExtensionIDCommand(
                 *command, &tab_id, &app_extension_id)) {
           return true;
         }
@@ skipping 295 matching lines @@
       return Browser::TYPE_APP_POPUP;
     case TYPE_DEVTOOLS:
       return Browser::TYPE_DEVTOOLS;
     case TYPE_APP_PANEL:
       return Browser::TYPE_APP_PANEL;
     case TYPE_NORMAL:
     default:
       return Browser::TYPE_NORMAL;
   }
 }