[1/5 chromium] Shows the clients which are controlled by ServiceWorker in DevTools.

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 5ac00ae5119087beeb003f0554f686b083ef5609..7302350314fbd057a8f1795607c31e359a16c76a 100644
--- a/content/browser/service_worker/service_worker_context_wrapper.cc
+++ b/content/browser/service_worker/service_worker_context_wrapper.cc
@@ -305,6 +305,27 @@ void ServiceWorkerContextWrapper::SimulateSkipWaiting(int64_t version_id) {
   registration->ActivateWaitingVersionWhenReady();
 }
 
+void ServiceWorkerContextWrapper::FocusClient(const std::string& client_uuid) {
+  if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&ServiceWorkerContextWrapper::FocusClient, this,
+                   client_uuid));
+    return;
+  }
+  if (!context_core_.get()) {
+    LOG(ERROR) << "ServiceWorkerContextCore is no longer alive.";
+    return;
+  }
+  ServiceWorkerProviderHost* provider_host =
+      context_core_->GetProviderHostByClientID(client_uuid);
+  if (!provider_host) {
+    LOG(ERROR) << "ServiceWorkerProviderHost is no longer alive.";
+    return;
+  }
+  provider_host->Focus(base::Bind(&ServiceWorkerUtils::NoOpClientInfoCallback));
+}
+
 static void DidFindRegistrationForDocument(
     const net::CompletionCallback& callback,
     ServiceWorkerStatusCode status,