Add AssertNoURLRequests() to URLRequestContext subclass destructors.

net/url_request/url_request_context_builder.cc

 // 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.
 
 #include "net/url_request/url_request_context_builder.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 147 matching lines @@
     }
     return file_thread_.get();
   }
 
   void set_transport_security_persister(
       scoped_ptr<TransportSecurityPersister> transport_security_persister) {
     transport_security_persister = transport_security_persister.Pass();
   }
 
  protected:
-  virtual ~BasicURLRequestContext() {}
+  virtual ~BasicURLRequestContext() {
+    AssertNoURLRequests();
+  }
 
  private:
   // Threads should be torn down last.
   scoped_ptr<base::Thread> cache_thread_;
   scoped_ptr<base::Thread> file_thread_;
 
   URLRequestContextStorage storage_;
   scoped_ptr<TransportSecurityPersister> transport_security_persister_;
 
   DISALLOW_COPY_AND_ASSIGN(BasicURLRequestContext);
@@ skipping 221 matching lines @@
 #endif  // !defined(DISABLE_FTP_SUPPORT)
 
   storage->set_job_factory(job_factory);
 
   // TODO(willchan): Support sdch.
 
   return context;
 }
 
 }  // namespace net