Add more WebAPK install metrics

chrome/browser/android/webapk/webapk_installer.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/android/webapk/webapk_installer.h"
 
 #include "base/android/build_info.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/path_utils.h"
@@ skipping 267 matching lines @@
   base::android::ScopedJavaLocalRef<jstring> java_webapk_package =
       base::android::ConvertUTF8ToJavaString(env, webapk_package_);
   base::android::ScopedJavaLocalRef<jstring> java_title =
       base::android::ConvertUTF16ToJavaString(env, shortcut_info_.user_title);
   base::android::ScopedJavaLocalRef<jstring> java_token =
       base::android::ConvertUTF8ToJavaString(env, token);
   base::android::ScopedJavaLocalRef<jstring> java_url =
       base::android::ConvertUTF8ToJavaString(env, shortcut_info_.url.spec());
 
   if (task_type_ == WebApkInstaller::INSTALL) {
+    webapk::TrackRequestTokenDuration(install_duration_timer_->Elapsed());
     Java_WebApkInstaller_installWebApkAsync(env, java_ref_, java_webapk_package,
                                             version, java_title, java_token,
                                             java_url);
   } else {
     Java_WebApkInstaller_updateAsync(env, java_ref_, java_webapk_package,
                                      version, java_title, java_token, java_url);
   }
 }
 
 void WebApkInstaller::OnResult(WebApkInstallResult result) {
@@ skipping 190 matching lines @@
       net::URLFetcher::Create(server_url, net::URLFetcher::POST, this);
   url_fetcher_->SetRequestContext(request_context_getter_);
   std::string serialized_request;
   request_proto->SerializeToString(&serialized_request);
   url_fetcher_->SetUploadData(kProtoMimeType, serialized_request);
   url_fetcher_->SetLoadFlags(
       net::LOAD_DISABLE_CACHE | net::LOAD_DO_NOT_SEND_COOKIES |
       net::LOAD_DO_NOT_SAVE_COOKIES | net::LOAD_DO_NOT_SEND_AUTH_DATA);
   url_fetcher_->Start();
 }