Fetch API: Stop lowercasing header names.

content/browser/service_worker/service_worker_browsertest.cc

Index: content/browser/service_worker/service_worker_browsertest.cc
diff --git a/content/browser/service_worker/service_worker_browsertest.cc b/content/browser/service_worker/service_worker_browsertest.cc
index 4cd88192d634a0a87562082bda0e1a2870e9d2e3..a506d0b0f7c2bd4769f0421ea4e734a1b14bce28 100644
--- a/content/browser/service_worker/service_worker_browsertest.cc
+++ b/content/browser/service_worker/service_worker_browsertest.cc
@@ -1175,8 +1175,8 @@ IN_PROC_BROWSER_TEST_F(ServiceWorkerVersionBrowserTest, FetchEvent_Response) {
   EXPECT_EQ(301, response.status_code);
   EXPECT_EQ("Moved Permanently", response.status_text);
   ServiceWorkerHeaderMap expected_headers;
-  expected_headers["content-language"] = "fi";
-  expected_headers["content-type"] = "text/html; charset=UTF-8";
+  expected_headers["Content-Language"] = "fi";
+  expected_headers["Content-Type"] = "text/html; charset=UTF-8";
   EXPECT_EQ(expected_headers, response.headers);
 
   std::string body;