Send POST request to update WebAPK instead of PUT request

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 325 matching lines @@
   base::PostTaskAndReplyWithResult(
       GetBackgroundTaskRunner().get(), FROM_HERE,
       base::Bind(&BuildWebApkProtoInBackground, shortcut_info_,
                   shortcut_icon_, shortcut_icon_murmur2_hash_),
       base::Bind(&WebApkInstaller::SendCreateWebApkRequest,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
 void WebApkInstaller::SendCreateWebApkRequest(
     std::unique_ptr<webapk::WebApk> webapk) {
-  SendRequest(std::move(webapk), net::URLFetcher::POST, server_url_);
+  SendRequest(std::move(webapk), server_url_);
 }
 
 void WebApkInstaller::SendUpdateWebApkRequest(
     std::unique_ptr<webapk::WebApk> webapk) {
   webapk->set_package_name(webapk_package_);
   webapk->set_version(std::to_string(webapk_version_));
 
-  SendRequest(std::move(webapk), net::URLFetcher::PUT, server_url_);
+  SendRequest(std::move(webapk), server_url_);
 }
 
 void WebApkInstaller::SendRequest(std::unique_ptr<webapk::WebApk> request_proto,
-                                  net::URLFetcher::RequestType request_type,
                                   const GURL& server_url) {
   timer_.Start(
       FROM_HERE,
       base::TimeDelta::FromMilliseconds(webapk_download_url_timeout_ms_),
       base::Bind(&WebApkInstaller::OnTimeout, weak_ptr_factory_.GetWeakPtr()));
 
-  url_fetcher_ = net::URLFetcher::Create(server_url, request_type, this);
+  url_fetcher_ =
+      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_->Start();
 }
 
 void WebApkInstaller::OnGotWebApkDownloadUrl(const GURL& download_url,
                                              const std::string& package_name) {
   webapk_package_ = package_name;
@@ skipping 98 matching lines @@
 
 void WebApkInstaller::OnSuccess() {
   finish_callback_.Run(true, webapk_package_);
   delete this;
 }
 
 void WebApkInstaller::OnFailure() {
   finish_callback_.Run(false, webapk_package_);
   delete this;
 }