[Background Fetch] Implement BackgroundFetchRecord.

This will be required to implement match() and matchAll() on
BackgroundFetchRegistration in a follow-up CL.

Bug: 869918
Change-Id: I9ed88076488a035f313b9d16e0f41b3c168a0a09
Reviewed-on: https://chromium-review.googlesource.com/1169465Reviewed-by: Peter Beverloo <peter@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Mugdha Lakhani <nator@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582574}

third_party/WebKit/LayoutTests/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt

@@ -36,6 +36,11 @@ interface BackgroundFetchManager
     method fetch
     method get
     method getIds
+interface BackgroundFetchRecord
+    attribute @@toStringTag
+    getter request
+    getter responseReady
+    method constructor
 interface BackgroundFetchRegistration : EventTarget
     attribute @@toStringTag
     getter downloadTotal

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

@@ -20,6 +20,8 @@ blink_modules_sources("background_fetch") {
     "background_fetch_icon_loader.h",
     "background_fetch_manager.cc",
     "background_fetch_manager.h",
+    "background_fetch_record.cc",
+    "background_fetch_record.h",
     "background_fetch_registration.cc",
     "background_fetch_registration.h",
     "background_fetch_settled_event.cc",

third_party/blink/renderer/modules/background_fetch/background_fetch_record.cc

+// Copyright 2018 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/background_fetch/background_fetch_record.h"
+
+#include "third_party/blink/renderer/core/fetch/request.h"
+#include "third_party/blink/renderer/core/fetch/response.h"
+
+namespace blink {
+
+BackgroundFetchRecord::BackgroundFetchRecord(Request* request,
+                                             Response* response)
+    : request_(request), response_(response) {
+  DCHECK(request_);
+}
+
+BackgroundFetchRecord::~BackgroundFetchRecord() = default;
+
+ScriptPromise BackgroundFetchRecord::responseReady(ScriptState* script_state) {
+  if (!response_ready_property_) {
+    response_ready_property_ =
+        new ResponseReadyProperty(ExecutionContext::From(script_state), this,
+                                  ResponseReadyProperty::kResponseReady);
+  }
+  if (!response_) {
+    response_ = Response::Create(ExecutionContext::From(script_state),
+                                 nullptr /* FetchResponseData */);
+  }
+  DCHECK(response_);
+  response_ready_property_->Resolve(response_);
+  return response_ready_property_->Promise(script_state->World());
+}
+
+Request* BackgroundFetchRecord::request() const {
+  return request_;
+}
+
+void BackgroundFetchRecord::Trace(blink::Visitor* visitor) {
+  visitor->Trace(request_);
+  visitor->Trace(response_);
+  visitor->Trace(response_ready_property_);
+  ScriptWrappable::Trace(visitor);
+}
+
+}  // namespace blink

third_party/blink/renderer/modules/background_fetch/background_fetch_record.h

+// Copyright 2018 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_BACKGROUND_FETCH_BACKGROUND_FETCH_RECORD_H_
+#define THIRD_PARTY_BLINK_RENDERER_MODULES_BACKGROUND_FETCH_BACKGROUND_FETCH_RECORD_H_
+
+#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
+#include "third_party/blink/renderer/bindings/core/v8/script_promise_property.h"
+#include "third_party/blink/renderer/core/dom/dom_exception.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/heap/handle.h"
+
+namespace blink {
+
+class Request;
+class Response;
+
+class MODULES_EXPORT BackgroundFetchRecord final : public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  explicit BackgroundFetchRecord(Request* request,
+                                 Response* response = nullptr);
+  ~BackgroundFetchRecord() override;
+
+  Request* request() const;
+  ScriptPromise responseReady(ScriptState* script_state);
+
+  void Trace(blink::Visitor* visitor) override;
+
+ private:
+  using ResponseReadyProperty =
+      ScriptPromiseProperty<Member<BackgroundFetchRecord>,
+                            Member<Response>,
+                            Member<DOMException>>;
+  Member<Request> request_;
+  Member<Response> response_;
+  Member<ResponseReadyProperty> response_ready_property_;
+};
+
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_BACKGROUND_FETCH_BACKGROUND_FETCH_RECORD_H_

third_party/blink/renderer/modules/background_fetch/background_fetch_record.idl

+// Copyright 2018 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/background-fetch/#background-fetch-record
+
+[
+    Exposed=(ServiceWorker),
+    RuntimeEnabled=BackgroundFetch
+] interface BackgroundFetchRecord {
+    readonly attribute Request request;
+    [CallWith=ScriptState] readonly attribute Promise<Response> responseReady;
+};
\ No newline at end of file

third_party/blink/renderer/modules/modules_idl_files.gni

@@ -69,6 +69,7 @@ modules_idl_files =
           "background_fetch/background_fetch_fail_event.idl",
           "background_fetch/background_fetch_fetch.idl",
           "background_fetch/background_fetch_manager.idl",
+          "background_fetch/background_fetch_record.idl",
           "background_fetch/background_fetch_registration.idl",
           "background_fetch/background_fetch_settled_event.idl",
           "background_fetch/background_fetch_settled_fetch.idl",

third_party/blink/renderer/platform/bindings/script_promise_properties.h

@@ -6,13 +6,14 @@
 #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_SCRIPT_PROMISE_PROPERTIES_H_
 
 // See ScriptPromiseProperty.h
-#define SCRIPT_PROMISE_PROPERTIES(P, ...)    \
-  P(ScriptPromise, kReady##__VA_ARGS__)      \
-  P(ScriptPromise, kClosed##__VA_ARGS__)     \
-  P(ScriptPromise, kFinished##__VA_ARGS__)   \
-  P(ScriptPromise, kLoaded##__VA_ARGS__)     \
-  P(ScriptPromise, kReleased##__VA_ARGS__)   \
-  P(ScriptPromise, kUserChoice##__VA_ARGS__) \
+#define SCRIPT_PROMISE_PROPERTIES(P, ...)       \
+  P(ScriptPromise, kReady##__VA_ARGS__)         \
+  P(ScriptPromise, kClosed##__VA_ARGS__)        \
+  P(ScriptPromise, kFinished##__VA_ARGS__)      \
+  P(ScriptPromise, kLoaded##__VA_ARGS__)        \
+  P(ScriptPromise, kReleased##__VA_ARGS__)      \
+  P(ScriptPromise, kResponseReady##__VA_ARGS__) \
+  P(ScriptPromise, kUserChoice##__VA_ARGS__)    \
   P(ScriptPromise, kPreloadResponse##__VA_ARGS__)
 
 #endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_SCRIPT_PROMISE_PROPERTIES_H_