PageLoadMetrics renderer and browser implementation.

components/page_load_metrics/renderer/BUILD.gn

Index: components/page_load_metrics/renderer/BUILD.gn
diff --git a/components/page_load_metrics/renderer/BUILD.gn b/components/page_load_metrics/renderer/BUILD.gn
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+# 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.
+
+# GYP version: components/page_load_metrics.gypi:page_load_metrics_renderer
+static_library("renderer") {
+  sources = [
+    "metrics_render_frame_observer.cc",
+    "metrics_render_frame_observer.h",
+    "page_timing_metrics_sender.cc",
+    "page_timing_metrics_sender.h",
+  ]
+  public_deps = [
+    "//content/public/renderer",
+  ]
+  deps = [
+    "//base",
+    "//components/page_load_metrics/common",
+    "//third_party/WebKit/public:blink",
+    "//url",
+  ]
+}
+
+source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "metrics_render_frame_observer_unittest.cc",
+    "page_timing_metrics_sender_unittest.cc",
+  ]
+  deps = [
+    ":renderer",
+    "//ipc",
+    "//testing/gmock",
+    "//testing/gtest",
+  ]
+}