Do not cancel request when an error occurs in a webRequest event handler

chrome/browser/extensions/api/web_request/web_request_api.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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_WEB_REQUEST_WEB_REQUEST_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_WEB_REQUEST_WEB_REQUEST_API_H_
 
 #include <list>
 #include <map>
 #include <set>
@@ skipping 469 matching lines @@
 };
 
 class WebRequestEventHandled : public SyncIOThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("webRequestInternal.eventHandled",
                              WEBREQUESTINTERNAL_EVENTHANDLED)
 
  protected:
   virtual ~WebRequestEventHandled() {}
 
-  // Cancels and unblocks the network request, and sets error_ such that the
-  // developer console will show the respective error message. Use this function
-  // to handle incorrect requests from the extension that cannot be detected by
-  // the schema validator.
-  void CancelWithError(
+  // Unblocks the network request and sets |error_| such that the developer
+  // console will show the respective error message. Use this function to handle
+  // incorrect requests from the extension that cannot be detected by the schema
+  // validator.
+  void RespondWithError(
       const std::string& event_name,
       const std::string& sub_event_name,
       uint64 request_id,
       scoped_ptr<ExtensionWebRequestEventRouter::EventResponse> response,
       const std::string& error);
 
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 };
 
@@ skipping 14 matching lines @@
   virtual void OnQuotaExceeded(const std::string& error) OVERRIDE;
   virtual bool RunImpl() OVERRIDE;
 };
 
 // Send updates to |host| with information about what webRequest-related
 // extensions are installed.
 // TODO(mpcomplete): remove. http://crbug.com/100411
 void SendExtensionWebRequestStatusToHost(content::RenderProcessHost* host);
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_WEB_REQUEST_WEB_REQUEST_API_H_