wilco_dtc_supportd: add support for HTTP PATCH

Add HTTP PATCH Mojo API support in wilco_dtc_supportd.mojom.

Add the HTTP PATCH method to the list of supported HTTP methods in
wilco_dtc_supportd mojo client. This enables the requester
(wilco_dtc_supportd daemon) to make HTTP PATCH requests instead of
receiving errors.

BUG=b:159097923
TEST=Added unit test for Patch method (PASS)

Change-Id: I1000067f5c3658f80c6046e4ffea9871d49d557d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2247030Reviewed-by: Oleh Lamzin <lamzin@google.com>
Reviewed-by: Mattias Nissler <mnissler@chromium.org>
Commit-Queue: Mahmoud Gawad <mgawad@google.com>
Cr-Commit-Position: refs/heads/master@{#779820}

chrome/browser/chromeos/wilco_dtc_supportd/wilco_dtc_supportd_web_request_service.cc

@@ -49,6 +49,9 @@ std::string GetHttpMethod(
       return "POST";
     case wilco_dtc_supportd::mojom::WilcoDtcSupportdWebRequestHttpMethod::kPut:
       return "PUT";
+    case wilco_dtc_supportd::mojom::WilcoDtcSupportdWebRequestHttpMethod::
+        kPatch:
+      return "PATCH";
   }
   return "";
 }

chrome/browser/chromeos/wilco_dtc_supportd/wilco_dtc_supportd_web_request_service_unittest.cc

@@ -271,6 +271,26 @@ TEST_F(WilcoDtcSupportdWebRequestServiceTest, HttpMethodPutEmptyBody) {
   EXPECT_EQ(request_result->response_body, "");
 }
 
+TEST_F(WilcoDtcSupportdWebRequestServiceTest, HttpMethodPatchEmptyBody) {
+  std::unique_ptr<WebRequestResult> request_result;
+  base::RunLoop run_loop;
+
+  StartWebRequest(
+      wilco_dtc_supportd::mojom::WilcoDtcSupportdWebRequestHttpMethod::kPatch,
+      kFakeUrl, {} /* headers */, "" /* request_body */, &request_result,
+      &run_loop);
+  EXPECT_FALSE(request_result);
+  InjectNetworkResponse(kFakeUrl,
+                        std::make_unique<net::HttpStatusCode>(net::HTTP_OK),
+                        net::OK, "" /* response_body */);
+  run_loop.Run();
+  ASSERT_TRUE(request_result);
+  EXPECT_EQ(request_result->status,
+            wilco_dtc_supportd::mojom::WilcoDtcSupportdWebRequestStatus::kOk);
+  EXPECT_EQ(request_result->http_status, net::HTTP_OK);
+  EXPECT_EQ(request_result->response_body, "");
+}
+
 TEST_F(WilcoDtcSupportdWebRequestServiceTest, ResponseCodeParsingError) {
   std::unique_ptr<WebRequestResult> request_result;
   base::RunLoop run_loop;

chrome/services/wilco_dtc_supportd/public/mojom/wilco_dtc_supportd.mojom

@@ -18,6 +18,7 @@ enum WilcoDtcSupportdWebRequestHttpMethod {
   kHead,
   kPost,
   kPut,
+  kPatch,
 };
 
 [Extensible]