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

chrome/browser/defaults.cc

-// Copyright (c) 2009 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 "chrome/browser/defaults.h"
 
 namespace browser_defaults {
 
 #if defined(OS_CHROMEOS)
 
 const double kAutocompleteEditFontPixelSize = 12.0;
@@ skipping 51 matching lines @@
 #endif
 const bool kOSSupportsOtherBrowsers = true;
 const bool kSizeTabButtonToTopOfTabStrip = false;
 const bool kBootstrapSyncAuthentication = false;
 const bool kShowOtherBrowsersInAboutMemory = true;
 
 #endif
 
 #if defined(OS_MACOSX)
 const bool kBrowserAliveWithNoWindows = true;
-// When this gets enabled on Mac, remove this default.
-const bool kEnablePinnedTabs = false;
 #else
 const bool kBrowserAliveWithNoWindows = false;
-const bool kEnablePinnedTabs = true;
 #endif
 
 }  // namespace browser_defaults