Convert PageLoadMetrics to Mojo

components/page_load_metrics/common/page_load_metrics.mojom

Index: components/page_load_metrics/common/page_load_metrics.mojom
diff --git a/components/page_load_metrics/common/page_load_metrics.mojom b/components/page_load_metrics/common/page_load_metrics.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..f2e23b93375e08506ffffd513cbfad17a1cb3e91
--- /dev/null
+++ b/components/page_load_metrics/common/page_load_metrics.mojom
@@ -0,0 +1,17 @@
+// Copyright 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.
+
+module page_load_metrics.mojom;
+
+[Native]
+struct PageLoadMetadata;
+
+[Native]
+struct PageLoadTiming;
+
+interface PageLoadMetrics {
+  // Sent from renderer to browser process when the PageLoadTiming for the
+  // associated frame changed.
+  TimingUpdated(PageLoadTiming last_timing, PageLoadMetadata metadata);
+};