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

net/url_request/url_request_job_manager.h

Index: net/url_request/url_request_job_manager.h
diff --git a/net/url_request/url_request_job_manager.h b/net/url_request/url_request_job_manager.h
index ea441bea316542dc6422e614f35b771aabe65a53..7ceb05bd2cfab76f3b12ea30a0711303ae2477b5 100644
--- a/net/url_request/url_request_job_manager.h
+++ b/net/url_request/url_request_job_manager.h
@@ -28,7 +28,7 @@ namespace net {
 //   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();