Implemented proper support for checking schemes and requested resource types.

chrome/browser/extensions/api/web_request/web_request_api_helpers.h

 // 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.
 
 // Helper classes and functions used for the WebRequest API.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_WEB_REQUEST_WEB_REQUEST_API_HELPERS_H_
 #define CHROME_BROWSER_EXTENSIONS_API_WEB_REQUEST_WEB_REQUEST_API_HELPERS_H_
 #pragma once
 
 #include <list>
 #include <set>
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/auth.h"
 #include "net/base/net_log.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
+#include "webkit/glue/resource_type.h"
 
 namespace base {
 class ListValue;
 class Value;
 }
 
 namespace extension_web_request_api_helpers {
 
 typedef std::pair<std::string, std::string> ResponseHeader;
 typedef std::vector<ResponseHeader> ResponseHeaders;
@@ skipping 140 matching lines @@
 // Returns whether authentication credentials are set.
 bool MergeOnAuthRequiredResponses(
     const EventResponseDeltas& deltas,
     net::AuthCredentials* auth_credentials,
     std::set<std::string>* conflicting_extensions,
     EventLogEntries* event_log_entries);
 
 // Returns true if requests for |url| shall not be reported to extensions.
 bool HideRequestForURL(const GURL& url);
 
+// Returns whether |type| is a ResourceType that is handled by the web request
+// API.
+bool IsRelevantResourceType(ResourceType::Type type);
+
+// Returns a string representation of |type| or |other| if |type| is not handled
+// by the web request API.
+const char* ResourceTypeToString(ResourceType::Type type);
+
+// Stores a |ResourceType::Type| representation in |type| if |type_str| is
+// a resource type handled by the web request API. Returns true in case of
+// success.
+bool ParseResourceType(const std::string& type_str,
+                       ResourceType::Type* type);
+
 }  // namespace extension_web_request_api_helpers
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_WEB_REQUEST_WEB_REQUEST_API_HELPERS_H_