Fix bug where DeterministicDispatcher CHECKed for killed jobs

headless/public/util/testing/fake_managed_dispatch_url_request_job.cc

Index: headless/public/util/testing/fake_managed_dispatch_url_request_job.cc
diff --git a/headless/public/util/testing/fake_managed_dispatch_url_request_job.cc b/headless/public/util/testing/fake_managed_dispatch_url_request_job.cc
index 24191d3f0266db5fb41aba145fa72f4055211a1b..a541cb7af6ae2ee88dcfd1617363393e74ba7de3 100644
--- a/headless/public/util/testing/fake_managed_dispatch_url_request_job.cc
+++ b/headless/public/util/testing/fake_managed_dispatch_url_request_job.cc
@@ -4,6 +4,8 @@
 
 #include "headless/public/util/testing/fake_managed_dispatch_url_request_job.h"
 
+#include "headless/public/util/url_request_dispatcher.h"
+
 namespace headless {
 
 void FakeManagedDispatchURLRequestJob::OnHeadersComplete() {
@@ -14,4 +16,8 @@ void FakeManagedDispatchURLRequestJob::OnStartError(net::Error error) {
   notifications_->push_back(base::StringPrintf("id: %d err: %d", id_, error));
 }
 
+void FakeManagedDispatchURLRequestJob::Kill() {
+  url_request_dispatcher_->JobKilled(this);
+}
+
 }  // namespace headless