[Page Load Metrics] PageLoadMetrics Mojofication.

chrome/renderer/page_load_metrics/fake_page_load_metrics.cc

+// Copyright 2017 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 "chrome/renderer/page_load_metrics/fake_page_load_metrics.h"
+
+#include "base/feature_list.h"
+#include "chrome/common/chrome_features.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace page_load_metrics {
+
+FakePageLoadMetricsImpl::FakePageLoadMetricsImpl() : binding_(this) {}
+
+void FakePageLoadMetricsImpl::Bind(mojom::PageLoadMetricsRequest request) {
+  binding_.Close();
+  binding_.Bind(std::move(request));
+}
+
+FakePageLoadMetricsImpl::~FakePageLoadMetricsImpl() {
+  VerifyExpectedTimings();
+}
+
+void FakePageLoadMetricsImpl::ExpectPageLoadTiming(
+    const PageLoadTiming& timing) {
+  VerifyExpectedTimings();
+  expected_timings_.push_back(timing);
+}
+
+void FakePageLoadMetricsImpl::VerifyExpectedTimings() const {
+  if (!base::FeatureList::IsEnabled(features::kPageLoadMetricsMojofication))
+    return;
+  // Ideally we'd just call ASSERT_EQ(actual_timings_, expected_timings_) here,
+  // but this causes the generated gtest code to fail to build on Windows. See
+  // the comments in the header file for additional details.
+  ASSERT_EQ(actual_timings_.size(), expected_timings_.size());
+  for (size_t i = 0; i < actual_timings_.size(); ++i) {
+    if (actual_timings_.at(i) == expected_timings_.at(i))
+      continue;
+    ADD_FAILURE() << "Actual timing != expected timing at index " << i;
+  }
+}
+
+void FakePageLoadMetricsImpl::UpdateTiming(const PageLoadTiming& timing,
+                                           const PageLoadMetadata& metadata) {
+  actual_timings_.push_back(timing);
+  VerifyExpectedTimings();
+}
+
+}  // namespace page_load_metrics