[Page Load Metrics] Add mojom file to page load metrics.

chrome/renderer/page_load_metrics/fake_page_timing_metrics_ipc_sender.cc

Index: chrome/renderer/page_load_metrics/fake_page_timing_metrics_ipc_sender.cc
diff --git a/chrome/renderer/page_load_metrics/fake_page_timing_metrics_ipc_sender.cc b/chrome/renderer/page_load_metrics/fake_page_timing_metrics_ipc_sender.cc
index 171a6701d60dbb2e67efb6e9a5265442737605b4..abc21585140f455e53f025694be7641eb1799c0e 100644
--- a/chrome/renderer/page_load_metrics/fake_page_timing_metrics_ipc_sender.cc
+++ b/chrome/renderer/page_load_metrics/fake_page_timing_metrics_ipc_sender.cc
@@ -19,7 +19,7 @@ FakePageTimingMetricsIPCSender::~FakePageTimingMetricsIPCSender() {
 void FakePageTimingMetricsIPCSender::ExpectPageLoadTiming(
     const PageLoadTiming& timing) {
   VerifyExpectedTimings();
-  expected_timings_.push_back(timing);
+  expected_timings_.push_back(timing.Clone());
 }
 
 void FakePageTimingMetricsIPCSender::VerifyExpectedTimings() const {
@@ -28,7 +28,7 @@ void FakePageTimingMetricsIPCSender::VerifyExpectedTimings() const {
   // 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))
+    if (actual_timings_.at(i)->Equals(*expected_timings_.at(i)))
       continue;
     ADD_FAILURE() << "Actual timing != expected timing at index " << i;
   }
@@ -47,7 +47,7 @@ bool FakePageTimingMetricsIPCSender::Send(IPC::Message* message) {
 void FakePageTimingMetricsIPCSender::OnTimingUpdated(
     const PageLoadTiming& timing,
     PageLoadMetadata metadata) {
-  actual_timings_.push_back(timing);
+  actual_timings_.push_back(timing.Clone());
   VerifyExpectedTimings();
 }