WebView Metrics client implementation (Chromium part)

android_webview/BUILD.gn

Index: android_webview/BUILD.gn
diff --git a/android_webview/BUILD.gn b/android_webview/BUILD.gn
index b5f5fbcf9c8aad3caccf3a7e6600b9653eaeed99..fe740800894a7656c934668e7494071c4bb39dc1 100644
--- a/android_webview/BUILD.gn
+++ b/android_webview/BUILD.gn
@@ -350,6 +350,8 @@ source_set("common") {
     "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",
@@ -479,6 +481,9 @@ source_set("common") {
     "//components/crash/content/browser",
     "//components/data_reduction_proxy/core/browser",
     "//components/devtools_discovery",
+    "//components/metrics",
+    "//components/metrics:net",
+    "//components/metrics:ui",
     "//components/navigation_interception",
     "//components/printing/browser",
     "//components/printing/common",
@@ -560,6 +565,7 @@ android_library("android_webview_java") {
     "java/src/org/chromium/android_webview/AwLayoutSizer.java",
     "java/src/org/chromium/android_webview/AwMessagePort.java",
     "java/src/org/chromium/android_webview/AwMessagePortService.java",
+    "java/src/org/chromium/android_webview/AwMetricsServiceClient.java",
     "java/src/org/chromium/android_webview/AwPdfExporter.java",
     "java/src/org/chromium/android_webview/AwPicture.java",
     "java/src/org/chromium/android_webview/AwPrintDocumentAdapter.java",
@@ -588,6 +594,7 @@ android_library("android_webview_java") {
     "java/src/org/chromium/android_webview/OverScrollGlow.java",
     "java/src/org/chromium/android_webview/permission/AwGeolocationCallback.java",
     "java/src/org/chromium/android_webview/permission/AwPermissionRequest.java",
+    "java/src/org/chromium/android_webview/PlatformServiceBridge.java",
     "java/src/org/chromium/android_webview/policy/AwPolicyProvider.java",
     "java/src/org/chromium/android_webview/PostMessageSender.java",
     "java/src/org/chromium/android_webview/ScrollAccessibilityHelper.java",