Reland "Introduce QuicTransport"

This is a reland of 93e10d47. The original
change was reverted due to a clusterfuzz report, but this CL seems innocent so
I'm relanding this.

Original change's description:
> Introduce QuicTransport
>
> This is the first CL to implement QuicTransport. This CL
>  - creates a directory in blink,
>  - introduces a new blink runtime feature flag, and
>  - defines QuicTransport IDL interface behind the flag,
>
> Bug: 1011392
> Change-Id: Id432cee2b6d5df6ab4a4c3e8aa6828d5a7937dd9
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1868569
> Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
> Reviewed-by: Kent Tamura <tkent@chromium.org>
> Reviewed-by: Adam Rice <ricea@chromium.org>
> Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#707303}

TBR=kinuko@chromium.org,ricea@chromium.org,yhirano@chromium.org,tkent@chromium.org

Bug: 1011392, 1016436
Change-Id: Iad9e785cd5886c7b2d2e25fe55f3b5f327727f87
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1880502
Commit-Queue: Kent Tamura <tkent@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Reviewed-by: Adam Rice <ricea@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709401}

third_party/blink/renderer/modules/BUILD.gn

@@ -149,6 +149,7 @@ jumbo_component("modules") {
     "//third_party/blink/renderer/modules/webmidi",
     "//third_party/blink/renderer/modules/webshare",
     "//third_party/blink/renderer/modules/websockets",
+    "//third_party/blink/renderer/modules/webtransport",
     "//third_party/blink/renderer/modules/webusb",
     "//third_party/blink/renderer/modules/worklet",
     "//third_party/blink/renderer/modules/xr",
@@ -457,6 +458,7 @@ jumbo_source_set("unit_tests") {
     "//third_party/blink/renderer/modules/gamepad:unit_tests",
     "//third_party/blink/renderer/modules/hid:unit_tests",
     "//third_party/blink/renderer/modules/storage:unit_tests",
+    "//third_party/blink/renderer/modules/webtransport:unit_tests",
     "//third_party/blink/renderer/platform",
     "//third_party/blink/renderer/platform/wtf",
     "//third_party/opus",

third_party/blink/renderer/modules/modules_idl_files.gni

@@ -490,6 +490,7 @@ modules_idl_files =
           "websockets/close_event.idl",
           "websockets/websocket.idl",
           "websockets/websocket_stream.idl",
+          "webtransport/quic_transport.idl",
           "webusb/usb.idl",
           "webusb/usb_alternate_interface.idl",
           "webusb/usb_configuration.idl",

third_party/blink/renderer/modules/webtransport/BUILD.gn

+# Copyright 2019 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.
+
+import("//third_party/blink/renderer/modules/modules.gni")
+
+blink_modules_sources("webtransport") {
+  sources = [
+    "quic_transport.cc",
+    "quic_transport.h",
+  ]
+}
+
+jumbo_source_set("unit_tests") {
+  testonly = true
+  sources = []
+
+  configs += [
+    "//third_party/blink/renderer:config",
+    "//third_party/blink/renderer:inside_blink",
+    "//third_party/blink/renderer/core:blink_core_pch",
+  ]
+
+  deps = [
+    "//testing/gmock",
+    "//testing/gtest",
+    "//third_party/blink/renderer/modules",
+    "//third_party/blink/renderer/platform",
+    "//third_party/blink/renderer/platform/wtf",
+  ]
+}

third_party/blink/renderer/modules/webtransport/OWNERS

+ricea@chromium.org
+yhirano@chromium.org
+
+# TEAM: blink-network-dev@chromium.org
+# COMPONENT: Blink>Network>WebTransport

third_party/blink/renderer/modules/webtransport/README.md

+# WebTransport API
+
+This is a directory for [Web Transport](https://wicg.github.io/web-transport/)
+implementation.
+
+## Design docs
+
+ - [QuicTransport](https://docs.google.com/document/d/1UgviRBnZkMUq4OKcsAJvIQFX6UCXeCbOtX_wMgwD_es/edit)

third_party/blink/renderer/modules/webtransport/quic_transport.cc

+// Copyright 2019 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 "third_party/blink/renderer/modules/webtransport/quic_transport.h"
+
+namespace blink {
+
+QuicTransport::QuicTransport(ScriptState* script_state, const String& url) {}
+
+void QuicTransport::Dispose() {}
+
+}  // namespace blink

third_party/blink/renderer/modules/webtransport/quic_transport.h

+// Copyright 2019 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.
+
+#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBTRANSPORT_QUIC_TRANSPORT_H_
+#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBTRANSPORT_QUIC_TRANSPORT_H_
+
+#include "third_party/blink/renderer/modules/modules_export.h"
+#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
+#include "third_party/blink/renderer/platform/wtf/forward.h"
+
+namespace blink {
+
+class ScriptState;
+
+class MODULES_EXPORT QuicTransport final : public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+  USING_PRE_FINALIZER(QuicTransport, Dispose);
+
+ public:
+  static QuicTransport* Create(ScriptState* script_state, const String& url) {
+    return MakeGarbageCollected<QuicTransport>(script_state, url);
+  }
+
+  QuicTransport(ScriptState*, const String& url);
+  ~QuicTransport() override = default;
+
+ private:
+  void Dispose();
+};
+
+}  // namespace blink
+
+#endif

third_party/blink/renderer/modules/webtransport/quic_transport.idl

+// Copyright 2019 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.
+
+// https://wicg.github.io/web-transport/#quic-transport
+[
+    Constructor(USVString url),
+    Exposed=(Window, Worker),
+    RuntimeEnabled=QuicTransport,
+    ConstructorCallWith=ScriptState
+] interface QuicTransport {
+  // QuicTransport is the first, and at this moment only, transport which is
+  // implemented. In the (draft) spec there are many mix-in interfaces which
+  // QuicTransport includes, but we define all their methods/attributes here
+  // for simplicity.
+};

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -1335,6 +1335,10 @@
       name: "PushMessagingSubscriptionChange",
       status: "experimental",
     },
+    {
+      name: "QuicTransport",
+      status: "experimental",
+    },
     {
       name: "ReducedReferrerGranularity",
     },

third_party/blink/web_tests/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt

@@ -1219,6 +1219,9 @@ interface PushSubscriptionOptions
     getter applicationServerKey
     getter userVisibleOnly
     method constructor
+interface QuicTransport
+    attribute @@toStringTag
+    method constructor
 interface ReadableStream
     attribute @@toStringTag
     getter locked

third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt

@@ -1154,6 +1154,9 @@ Starting worker: resources/global-interface-listing-worker.js
 [Worker]     getter applicationServerKey
 [Worker]     getter userVisibleOnly
 [Worker]     method constructor
+[Worker] interface QuicTransport
+[Worker]     attribute @@toStringTag
+[Worker]     method constructor
 [Worker] interface ReadableStream
 [Worker]     attribute @@toStringTag
 [Worker]     getter locked

third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt

@@ -5923,6 +5923,9 @@ interface PushSubscriptionOptions
     getter applicationServerKey
     getter userVisibleOnly
     method constructor
+interface QuicTransport
+    attribute @@toStringTag
+    method constructor
 interface RTCCertificate
     attribute @@toStringTag
     getter expires

third_party/blink/web_tests/webexposed/global-interface-listing-shared-worker-expected.txt

@@ -1136,6 +1136,9 @@ Starting worker: resources/global-interface-listing-worker.js
 [Worker]     getter applicationServerKey
 [Worker]     getter userVisibleOnly
 [Worker]     method constructor
+[Worker] interface QuicTransport
+[Worker]     attribute @@toStringTag
+[Worker]     method constructor
 [Worker] interface ReadableStream
 [Worker]     attribute @@toStringTag
 [Worker]     getter locked