PageLoadMetrics renderer and browser implementation (deprecated)

components/page_load_metrics/common/page_load_metrics_messages.h

Index: components/page_load_metrics/common/page_load_metrics_messages.h
diff --git a/components/page_load_metrics/common/page_load_metrics_messages.h b/components/page_load_metrics/common/page_load_metrics_messages.h
new file mode 100644
index 0000000000000000000000000000000000000000..0c1a6486b6780589d81e176ff3d6942314bc0355
--- /dev/null
+++ b/components/page_load_metrics/common/page_load_metrics_messages.h
@@ -0,0 +1,26 @@
+// Copyright 2015 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.
+
+// IPC messages for page load metrics.
+// Multiply-included message file, hence no include guard.
+
+#include "base/time/time.h"
+#include "components/page_load_metrics/common/page_load_timing.h"
+#include "ipc/ipc_message_macros.h"
+
+#define IPC_MESSAGE_START PageLoadMetricsMsgStart
+
+// See comments in page_load_timing.h for details on each field.
+IPC_STRUCT_TRAITS_BEGIN(page_load_metrics::PageLoadTiming)
+  IPC_STRUCT_TRAITS_MEMBER(navigation_start)
+  IPC_STRUCT_TRAITS_MEMBER(response_start)
+  IPC_STRUCT_TRAITS_MEMBER(dom_content_loaded_event_start)
+  IPC_STRUCT_TRAITS_MEMBER(load_event_start)
+  IPC_STRUCT_TRAITS_MEMBER(first_layout)
+IPC_STRUCT_TRAITS_END()
+
+// Sent from renderer to browser process when the PageLoadTiming for the
+// associated frame changed.
+IPC_MESSAGE_ROUTED1(PageLoadMetricsMsg_OnTimingUpdated,

[nasko, 2015/08/26 17:27:24]

nit: No need for "On" prefix, which we usually use for the handler method names.
The actual event is "TimingUpdated".

+                    page_load_metrics::PageLoadTiming)