PageLoadMetrics renderer and browser implementation.

components/page_load_metrics/browser/BUILD.gn

 # 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.
 
-source_set("content") {
+# GYP version: components/page_load_metrics.gypi:page_load_metrics_browser
+static_library("browser") {
   sources = [
-    "content_favicon_driver.cc",
-    "content_favicon_driver.h",
-    "favicon_url_util.cc",
-    "favicon_url_util.h",
+    "metrics_web_contents_observer.cc",
+    "metrics_web_contents_observer.h",
   ]
-
   public_deps = [
-    "//ui/gfx",
+    "//content/public/browser",
   ]
   deps = [
     "//base",
-    "//components/favicon/core",
-    "//components/favicon_base",
-    "//content/public/browser",
-    "//content/public/common",
+    "//components/page_load_metrics/common",
+    "//ipc",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
-    "content_favicon_driver_unittest.cc",
+    "metrics_web_contents_observer_unittest.cc",
   ]
   deps = [
-    ":content",
-    "//content/public/browser",
+    ":browser",
     "//testing/gtest",
   ]
 }