[Page Load Metrics] PageLoadMetrics Mojofication.

chrome/renderer/page_load_metrics/fake_page_timing_metrics_ipc_sender.h

-// Copyright (c) 2016 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 CHROME_RENDERER_PAGE_LOAD_METRICS_FAKE_PAGE_TIMING_METRICS_IPC_SENDER_H_
-#define CHROME_RENDERER_PAGE_LOAD_METRICS_FAKE_PAGE_TIMING_METRICS_IPC_SENDER_H_
-
-#include <vector>
-
-#include "chrome/common/page_load_metrics/page_load_timing.h"
-#include "ipc/ipc_sender.h"
-
-namespace IPC {
-class Message;
-}
-
-namespace page_load_metrics {
-
-// IPC::Sender implementation for use in tests. Allows for setting and verifying
-// basic expectations when sending PageLoadTiming IPCs. By default,
-// FakePageTimingMetricsIPCSender will verify that expected and actual
-// PageLoadTimings match on each invocation to ExpectPageLoadTiming() and
-// Send(), as well as in the destructor. Tests can force additional validations
-// by calling VerifyExpectedTimings.
-//
-// Expected PageLoadTimings are specified via ExpectPageLoadTiming, and actual
-// PageLoadTimings are dispatched through Send(). When Send() is called, we
-// verify that the actual PageLoadTimings dipatched through Send() match the
-// expected PageLoadTimings provided via ExpectPageLoadTiming.
-//
-// Normally, gmock would be used in place of this class, but gmock is not
-// compatible with structures that use aligned memory, and PageLoadTiming will
-// soon use base::Optional which uses aligned memory, so we're forced to roll
-// our own implementation here.  See
-// https://groups.google.com/forum/#!topic/googletestframework/W-Hud3j_c6I for
-// more details.
-class FakePageTimingMetricsIPCSender : public IPC::Sender {
- public:
-  FakePageTimingMetricsIPCSender();
-  ~FakePageTimingMetricsIPCSender() override;
-
-  // Implementation of IPC::Sender. PageLoadMetricsMsg_TimingUpdated IPCs that
-  // send updated PageLoadTimings should be dispatched through this method. This
-  // method will verify that all PageLoadTiming update IPCs dispatched so far
-  // match with the expected PageLoadTimings passed to ExpectPageLoadTiming.
-  bool Send(IPC::Message* message) override;
-
-  // PageLoadTimings that are expected to be sent through Send() should be
-  // passed to ExpectPageLoadTiming.
-  void ExpectPageLoadTiming(const mojom::PageLoadTiming& timing);
-
-  // Forces verification that actual timings sent through Send match
-  // expected timings provided via ExpectPageLoadTiming.
-  void VerifyExpectedTimings() const;
-
-  const std::vector<mojom::PageLoadTimingPtr>& expected_timings() const {
-    return expected_timings_;
-  }
-  const std::vector<mojom::PageLoadTimingPtr>& actual_timings() const {
-    return actual_timings_;
-  }
-
- private:
-  void OnTimingUpdated(const mojom::PageLoadTiming& timing,
-                       mojom::PageLoadMetadata metadata);
-
-  std::vector<mojom::PageLoadTimingPtr> expected_timings_;
-  std::vector<mojom::PageLoadTimingPtr> actual_timings_;
-};
-
-}  // namespace page_load_metrics
-
-#endif  // CHROME_RENDERER_PAGE_LOAD_METRICS_FAKE_PAGE_TIMING_METRICS_IPC_SENDER_H_