Support touch icon in FaviconHelper

chrome/browser/defaults.h

Index: chrome/browser/defaults.h
diff --git a/chrome/browser/defaults.h b/chrome/browser/defaults.h
index dd06dbee869e229da8e86fd5ef049f762655723c..e733675ed110ed1dfdf4cdfcdd4ede349c93ee23 100644
--- a/chrome/browser/defaults.h
+++ b/chrome/browser/defaults.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -68,6 +68,9 @@ extern const bool kAlwaysOpenIncognitoWindow;
 // Should the close button be shown in the Task Manager dialog?
 extern const bool kShowCancelButtonInTaskManager;
 
+// Are touch icons enabled? False by default.
+extern const bool kEnableTouchIcon;
+
 //=============================================================================
 // Runtime "const" - set only once after parsing command line option and should
 // never be modified after that.