Use TestDelegate instead of URLFetcher in DevToolsListFetcher

Bug: 1010491
Change-Id: Ic86d00d46d6dad7a0f3db31562e68e268273c496
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2586454Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Commit-Queue: Kinuko Yasuda <kinuko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#836716}

fuchsia/base/test_devtools_list_fetcher.cc

@@ -18,57 +18,27 @@
 
 namespace cr_fuchsia {
 
-// Utility class to get the JSON value of the list URL for a DevTools service on
-// localhost.
-class DevToolsListFetcher : public net::URLFetcherDelegate {
- public:
-  DevToolsListFetcher() {
-    request_context_getter_ =
-        base::MakeRefCounted<net::TestURLRequestContextGetter>(
-            base::ThreadTaskRunnerHandle::Get());
-  }
-  ~DevToolsListFetcher() override = default;
-
-  base::Value GetDevToolsListFromPort(uint16_t port) {
-    std::string url = base::StringPrintf("http://127.0.0.1:%d/json/list", port);
-    std::unique_ptr<net::URLFetcher> fetcher = net::URLFetcher::Create(
-        GURL(url), net::URLFetcher::GET, this, TRAFFIC_ANNOTATION_FOR_TESTS);
-    fetcher->SetRequestContext(request_context_getter_.get());
-    fetcher->Start();
+base::Value GetDevToolsListFromPort(uint16_t port) {
+  GURL url(base::StringPrintf("http://127.0.0.1:%d/json/list", port));
+  net::TestURLRequestContext request_context;
+  net::TestDelegate delegate;
 
-    base::RunLoop run_loop;
-    on_url_fetch_complete_ack_ = run_loop.QuitClosure();
-    run_loop.Run();
+  std::unique_ptr<net::URLRequest> request(request_context.CreateRequest(
+      url, net::DEFAULT_PRIORITY, &delegate, TRAFFIC_ANNOTATION_FOR_TESTS));
+  request->Start();
+  delegate.RunUntilComplete();
 
-    if (fetcher->GetError() != net::OK)
+  if (delegate.request_status() < 0)
     return base::Value();
 
-    if (fetcher->GetResponseCode() != net::HTTP_OK)
+  if (request->response_headers()->response_code() != net::HTTP_OK)
     return base::Value();
 
-    std::string result;
-    if (!fetcher->GetResponseAsString(&result))
+  const std::string& result = delegate.data_received();
+  if (result.empty())
     return base::Value();
 
   return base::JSONReader::Read(result).value_or(base::Value());
-  }
-
- private:
-  // fuchsia::web::URLFetcherDelegate implementation.
-  void OnURLFetchComplete(const net::URLFetcher* source) override {
-    DCHECK(on_url_fetch_complete_ack_);
-    std::move(on_url_fetch_complete_ack_).Run();
-  }
-
-  scoped_refptr<net::TestURLRequestContextGetter> request_context_getter_;
-  base::OnceClosure on_url_fetch_complete_ack_;
-
-  DISALLOW_COPY_AND_ASSIGN(DevToolsListFetcher);
-};
-
-base::Value GetDevToolsListFromPort(uint16_t port) {
-  DevToolsListFetcher devtools_fetcher;
-  return devtools_fetcher.GetDevToolsListFromPort(port);
 }
 
 }  // namespace cr_fuchsia

fuchsia/base/test_devtools_list_fetcher.h

@@ -9,9 +9,6 @@
 
 namespace cr_fuchsia {
 
-// Outside of anonymous namespace so deprecated net::URLFetcher can friend it
-class DevToolsListFetcher;
-
 // Returns the JSON value of the list URL for the DevTools service listening
 // on port |port| on localhost. Returns an empty value on error.
 base::Value GetDevToolsListFromPort(uint16_t port);

net/url_request/url_fetcher.h

@@ -40,10 +40,6 @@ namespace cloud_print {
 class CloudPrintURLFetcher;
 }
 
-namespace cr_fuchsia {
-class DevToolsListFetcher;
-}
-
 namespace device {
 class UsbTestGadgetImpl;
 }
@@ -348,7 +344,6 @@ class NET_EXPORT URLFetcher {
   // This class is deprecated, and no new code should be using it. Construction
   // methods are private and pre-existing consumers are friended.
   friend class cloud_print::CloudPrintURLFetcher;
-  friend class cr_fuchsia::DevToolsListFetcher;
   friend class device::UsbTestGadgetImpl;
   friend class remoting::GstaticJsonFetcher;