Domain Reliability: Don't crash on shutdown with uploads pending

components/domain_reliability/uploader_unittest.cc

 // Copyright 2015 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.
 
 #include "components/domain_reliability/uploader.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 179 matching lines @@
             message_loop_.task_runner())),
         interceptor_(new UploadInterceptor()),
         uploader_(DomainReliabilityUploader::Create(
             &time_, url_request_context_getter_)) {
     net::URLRequestFilter::GetInstance()->AddUrlInterceptor(
         GURL(kUploadURL), base::WrapUnique(interceptor_));
     uploader_->set_discard_uploads(false);
   }
 
   ~DomainReliabilityUploaderTest() override {
+    uploader_->Shutdown();
     net::URLRequestFilter::GetInstance()->ClearHandlers();
   }
 
   DomainReliabilityUploader* uploader() const { return uploader_.get(); }
   UploadInterceptor* interceptor() const { return interceptor_; }
 
  private:
   base::MessageLoopForIO message_loop_;
   scoped_refptr<net::TestURLRequestContextGetter> url_request_context_getter_;
   UploadInterceptor* interceptor_;
@@ skipping 63 matching lines @@
   TestUploadCallback c;
   uploader()->UploadReport("{}", 1, GURL(kUploadURL), c.callback());
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(1u, c.called_count());
 
   EXPECT_EQ(2, interceptor()->last_upload_depth());
 }
 
 }  // namespace
 }  // namespace domain_reliability