Pass on download or installation errors from WebstoreInstaller to the CompleteInstall function.

net/url_request/url_request_job_manager.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_URL_REQUEST_URL_REQUEST_JOB_MANAGER_H_
 #define NET_URL_REQUEST_URL_REQUEST_JOB_MANAGER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 10 matching lines @@
 // request interceptors that determine how an URLRequestJob gets created to
 // handle an URLRequest.
 //
 // MULTI-THREADING NOTICE:
 //   URLRequest is designed to have all consumers on a single thread, and
 //   so no attempt is made to support ProtocolFactory or Interceptor instances
 //   being registered/unregistered or in any way poked on multiple threads.
 //   However, we do support checking for supported schemes FROM ANY THREAD
 //   (i.e., it is safe to call SupportsScheme on any thread).
 //
-class URLRequestJobManager {
+class NET_EXPORT URLRequestJobManager {
  public:
   // Returns the singleton instance.
   static URLRequestJobManager* GetInstance();
 
   // Instantiate an URLRequestJob implementation based on the registered
   // interceptors and protocol factories.  This will always succeed in
   // returning a job unless we are--in the extreme case--out of memory.
   URLRequestJob* CreateJob(URLRequest* request,
                            NetworkDelegate* network_delegate) const;
 
@@ skipping 65 matching lines @@
   mutable base::Lock lock_;
   FactoryMap factories_;
   InterceptorList interceptors_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestJobManager);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_JOB_MANAGER_H_