Consolidate scheme checks into an easy GURL method

webkit/browser/fileapi/sandbox_file_system_backend_delegate.cc

 // Copyright 2013 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 "webkit/browser/fileapi/sandbox_file_system_backend_delegate.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
 #include "base/stl_util.h"
@@ skipping 163 matching lines @@
         base::FilePath::StringType::npos)
       return false;
   }
 
   return true;
 }
 
 bool SandboxFileSystemBackendDelegate::IsAllowedScheme(const GURL& url) const {
   // Basically we only accept http or https. We allow file:// URLs
   // only if --allow-file-access-from-files flag is given.
-  if (url.SchemeIs("http") || url.SchemeIs("https"))
+  if (url.SchemeIsHttp())
     return true;
   if (url.SchemeIsFileSystem())
     return url.inner_url() && IsAllowedScheme(*url.inner_url());
 
   for (size_t i = 0;
        i < file_system_options_.additional_allowed_schemes().size();
        ++i) {
     if (url.SchemeIs(
             file_system_options_.additional_allowed_schemes()[i].c_str()))
       return true;
@@ skipping 238 matching lines @@
       break;
   }
 #undef REPORT
 }
 
 ObfuscatedFileUtil* SandboxFileSystemBackendDelegate::obfuscated_file_util() {
   return static_cast<ObfuscatedFileUtil*>(sync_file_util());
 }
 
 }  // namespace fileapi