interrupt and resume download with CONTENT_LENGTH_MISMATCH errors

content/public/browser/download_interrupt_reason_values.h

 // Copyright (c) 2011 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.
 
 // Note that the embedder is welcome to persist these values across
 // invocations of the browser, and possibly across browser versions.
 // Thus individual errors may be deprecated and new errors added, but
 // the values of particular errors should not be changed.
 
 // File errors.
@@ skipping 98 matching lines @@
 // Server certificate problem.
 INTERRUPT_REASON(SERVER_CERT_PROBLEM, 35)
 
 // Server access forbidden.
 INTERRUPT_REASON(SERVER_FORBIDDEN, 36)
 
 // Unexpected server response. This might indicate that the responding server
 // may not be the intended server.
 INTERRUPT_REASON(SERVER_UNREACHABLE, 37)
 
+// The server sent fewer bytes then the content-length header. It may indicate
+// that the connection was closed prematurely, or it may indicate that the
+// server sent an invalid Content-Length header.
+INTERRUPT_REASON(SERVER_CONTENT_LENGTH_MISMATCH, 38)

[David Trainor- moved to gerrit, 2017/04/25 03:50:41]

Am I understanding that we only interrupt when we have a strong validator?  Do
we want to make that clear here?

[qinmin, 2017/04/25 19:27:47]

Done.

[xingliu, 2017/04/25 19:32:05]

FYI: We might need to change some other files, I remember extension generate
their api file based on this.

[qinmin, 2017/04/25 20:52:12]

Done. There is a chrome/common/extensions/api/downloads.idl needs to be updated

+
 // User input.
 
 // The user canceled the download.
 // "Canceled".
 INTERRUPT_REASON(USER_CANCELED, 40)
 
 // The user shut down the browser.
 // Internal use only:  resume pending downloads if possible.
 INTERRUPT_REASON(USER_SHUTDOWN, 41)
 
 
 // Crash.
 
 // The browser crashed.
 // Internal use only:  resume pending downloads if possible.
 INTERRUPT_REASON(CRASH, 50)