Add full support for filesystem URLs.

content/browser/browser_url_handler.cc

Index: content/browser/browser_url_handler.cc
diff --git a/content/browser/browser_url_handler.cc b/content/browser/browser_url_handler.cc
index 8bcb2d6adaf0219ba8f962fc8c3f5af11ef3e46a..4a7386322432ec40e2f7ffa0b14f3ec0ae386ae4 100644
--- a/content/browser/browser_url_handler.cc
+++ b/content/browser/browser_url_handler.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 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.
 
@@ -22,7 +22,7 @@ static bool HandleViewSource(GURL* url,
     static const char* const allowed_sub_schemes[] = {
       chrome::kHttpScheme, chrome::kHttpsScheme, chrome::kFtpScheme,
       chrome::kChromeDevToolsScheme, chrome::kChromeUIScheme,
-      chrome::kFileScheme
+      chrome::kFileScheme, chrome::kFileSystemScheme
     };
 
     bool is_sub_scheme_allowed = false;