[Payments] Implement web payment app manifest

content/browser/service_worker/service_worker_context_wrapper.cc

Index: content/browser/service_worker/service_worker_context_wrapper.cc
diff --git a/content/browser/service_worker/service_worker_context_wrapper.cc b/content/browser/service_worker/service_worker_context_wrapper.cc
index fbb00d4fc0fd42a3bd650f6ce2cb7cc28cbcfdd0..518404b71674dbea2665a19fcff99600f0f900e9 100644
--- a/content/browser/service_worker/service_worker_context_wrapper.cc
+++ b/content/browser/service_worker/service_worker_context_wrapper.cc
@@ -569,6 +569,24 @@ void ServiceWorkerContextWrapper::HasMainFrameProviderHost(
   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) {