[Payments] Implement web payment app manifest

content/browser/service_worker/service_worker_context_wrapper.cc

 // Copyright 2013 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 "content/browser/service_worker/service_worker_context_wrapper.h"
 
 #include <map>
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 551 matching lines @@
     const BoolCallback& callback) const {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (!context_core_) {
     base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
                                                   base::Bind(callback, false));
     return;
   }
   context_core_->HasMainFrameProviderHost(origin, callback);
 }
 
+std::unique_ptr<std::vector<std::pair<int, int>>>
+ServiceWorkerContextWrapper::GetProviderHostIds(const GURL& origin) const {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  std::unique_ptr<std::vector<std::pair<int, int>>> render_frames(
+      new std::vector<std::pair<int, int>>());
+
+  for (std::unique_ptr<ServiceWorkerContextCore::ProviderHostIterator> it =
+           context_core_->GetClientProviderHostIterator(origin);
+       !it->IsAtEnd(); it->Advance()) {
+    ServiceWorkerProviderHost* provider_host = it->GetProviderHost();
+    render_frames->push_back(

[falken, 2017/07/05 01:55:05]

This isn't necessarily a render_frame. I would call |render_frames| something
like |provider_host_ids|.

[gogerald1, 2017/07/05 02:26:04]

Done.

+        std::make_pair(provider_host->process_id(), provider_host->frame_id()));
+  }
+
+  return render_frames;
+}
+
 void ServiceWorkerContextWrapper::FindReadyRegistrationForDocument(
     const GURL& document_url,
     const FindRegistrationCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (!context_core_) {
     // FindRegistrationForDocument() can run the callback synchronously.
     callback.Run(SERVICE_WORKER_ERROR_ABORT, nullptr);
     return;
   }
   context_core_->storage()->FindRegistrationForDocument(
@@ skipping 377 matching lines @@
                                     service_worker_provider_id,
                                     std::move(client_ptr_info));
 }
 
 ServiceWorkerContextCore* ServiceWorkerContextWrapper::context() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   return context_core_.get();
 }
 
 }  // namespace content