Domain Reliability: Don't upload when metrics reporting is off.

components/domain_reliability/uploader_unittest.cc

Index: components/domain_reliability/uploader_unittest.cc
diff --git a/components/domain_reliability/uploader_unittest.cc b/components/domain_reliability/uploader_unittest.cc
index 362b202b50653220eac6bd6bc1fb043b906dee01..3581ef089157b8a143ec355bd47696bc5c289eba 100644
--- a/components/domain_reliability/uploader_unittest.cc
+++ b/components/domain_reliability/uploader_unittest.cc
@@ -28,7 +28,9 @@ class DomainReliabilityUploaderTest : public testing::Test {
         url_request_context_getter_(new net::TestURLRequestContextGetter(
             network_task_runner_)),
         uploader_(DomainReliabilityUploader::Create(
-            url_request_context_getter_)) {}
+            url_request_context_getter_)) {
+    uploader_->set_discard_uploads(false);
+  }
 
   DomainReliabilityUploader::UploadCallback MakeUploadCallback(size_t index) {
     return base::Bind(&DomainReliabilityUploaderTest::OnUploadComplete,
@@ -108,5 +110,18 @@ TEST_F(DomainReliabilityUploaderTest, FailedUpload) {
   EXPECT_FALSE(upload_successful_[0]);
 }
 
+TEST_F(DomainReliabilityUploaderTest, DiscardedUpload) {
+  net::TestURLFetcher* fetcher;
+
+  uploader_->set_discard_uploads(true);
+
+  std::string report_json = "{}";
+  GURL upload_url = GURL("https://example/upload");
+  uploader_->UploadReport(report_json, upload_url, MakeUploadCallback(0));
+
+  fetcher = url_fetcher_factory_.GetFetcherByID(0);
+  EXPECT_FALSE(fetcher);
+}
+
 }  // namespace
 }  // namespace domain_reliability