Introduce a delegate to avoid hardcoding "chrome-extension" in net/.

net/base/network_delegate.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 NET_BASE_NETWORK_DELEGATE_H_
 #define NET_BASE_NETWORK_DELEGATE_H_
 #pragma once
 
 #include <string>
 
@@ skipping 67 matching lines @@
                                           const AuthChallengeInfo& auth_info,
                                           const AuthCallback& callback,
                                           AuthCredentials* credentials);
   bool CanGetCookies(const URLRequest& request,
                      const CookieList& cookie_list);
   bool CanSetCookie(const URLRequest& request,
                     const std::string& cookie_line,
                     CookieOptions* options);
   bool CanAccessFile(const URLRequest& request,
                      const FilePath& path) const;
+  bool CanRejectRequest(const URLRequest& request) const;
 
  private:
   // This is the interface for subclasses of NetworkDelegate to implement. These
   // member functions will be called by the respective public notification
   // member function, which will perform basic sanity checking.
 
   // Called before a request is sent. Allows the delegate to rewrite the URL
   // being fetched by modifying |new_url|. |callback| and |new_url| are valid
   // only until OnURLRequestDestroyed is called for this request. Returns a net
   // status code, generally either OK to continue with the request or
@@ skipping 97 matching lines @@
                               const std::string& cookie_line,
                               CookieOptions* options) = 0;
 
 
   // Called when a file access is attempted to allow the network delegate to
   // allow or block access to the given file path.  Returns true if access is
   // allowed.
   virtual bool OnCanAccessFile(const URLRequest& request,
                                const FilePath& path) const = 0;
 
+  // Returns true if the given request may be rejected when the
+  // URLRequestThrottlerManager believes the server servicing the
+  // request is overloaded or down.
+  virtual bool OnCanRejectRequest(const URLRequest& request) const = 0;

[eroman, 2012/06/06 04:52:11]

nit: Can the name have the name "throttle" in it somewhere? "Reject" request
seems a bit too generic, and makes me think of OnBeforeURLRequest(). Would
"OnCanThrottlerRejectRequest" or "OnCanThrottleRequest" work?

[Jói, 2012/06/06 13:38:55]

Switched naming to CanThrottleRequest / OnCanThrottleRequest.

 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NETWORK_DELEGATE_H_