WebView Metrics client implementation (Chromium part)

android_webview/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.
 
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/config/locales.gni")
 import("//tools/grit/repack.gni")
 import("system_webview_apk_tmpl.gni")
 import("webview_repack_locales.gni")
@@ skipping 376 matching lines @@
     "browser/aw_javascript_dialog_manager.cc",
     "browser/aw_javascript_dialog_manager.h",
     "browser/aw_locale_manager.h",
     "browser/aw_login_delegate.cc",
     "browser/aw_login_delegate.h",
     "browser/aw_media_client_android.cc",
     "browser/aw_media_client_android.h",
     "browser/aw_message_port_message_filter.cc",
     "browser/aw_message_port_message_filter.h",
     "browser/aw_message_port_service.h",
+    "browser/aw_metrics_service_client.cc",
+    "browser/aw_metrics_service_client.h",
     "browser/aw_permission_manager.cc",
     "browser/aw_permission_manager.h",
     "browser/aw_pref_store.cc",
     "browser/aw_pref_store.h",
     "browser/aw_print_manager.cc",
     "browser/aw_print_manager.h",
     "browser/aw_printing_message_filter.cc",
     "browser/aw_printing_message_filter.h",
     "browser/aw_quota_manager_bridge.cc",
     "browser/aw_quota_manager_bridge.h",
@@ skipping 109 matching lines @@
     "//android_webview/native:native",
     "//cc/surfaces",
     "//components/auto_login_parser:auto_login_parser",
     "//components/autofill/content/renderer",
     "//components/cdm/browser",
     "//components/cdm/renderer",
     "//components/crash/content/app",
     "//components/crash/content/browser",
     "//components/data_reduction_proxy/core/browser",
     "//components/devtools_discovery",
+    "//components/metrics",
+    "//components/metrics:gpu",
+    "//components/metrics:net",
+    "//components/metrics:profiler",
+    "//components/metrics:ui",
     "//components/navigation_interception",
     "//components/printing/browser",
     "//components/printing/common",
     "//components/printing/renderer",
     "//components/visitedlink/browser",
     "//components/visitedlink/renderer",
     "//components/web_contents_delegate_android:web_contents_delegate_android",
     "//content",
     "//content/public/app:both",
     "//content/public/browser",
@@ skipping 102 matching lines @@
     android_manifest = get_target_outputs(":system_webview_manifest")
     android_manifest = android_manifest[1]
     android_manifest_dep = ":system_webview_manifest"
     deps = [
       ":system_webview_resources",
       "//android_webview/glue",
     ]
     apk_name = "SystemWebView"
   }
 }