DumpWithoutCrashing() if URLRequestHttpJob is killed while waiting for callback

BUG=432398

Review URL: https://codereview.chromium.org/892413007

Cr-Commit-Position: refs/heads/master@{#315052}

net/url_request/url_request_http_job.cc

@@ -10,6 +10,7 @@
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/debug/alias.h"
+#include "base/debug/dump_without_crashing.h"
 #include "base/file_version_info.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/field_trial.h"
@@ -289,6 +290,12 @@ void URLRequestHttpJob::Start() {
 }
 
 void URLRequestHttpJob::Kill() {
+  if (awaiting_callback_) {
+    // TODO(battre) crbug.com/289715
+    // Simulate a crash to see who kills the job while it is waiting for a
+    // callback. This should not happen, see URLRequest::OrphanJob().
+    base::debug::DumpWithoutCrashing();
+  }
   if (!transaction_.get())
     return;