Check if there is a SW controlling the start page for app banner.

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 <vector>
 
 #include "base/barrier_closure.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "content/browser/fileapi/chrome_blob_storage_context.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_observer.h"
 #include "content/browser/service_worker/service_worker_process_manager.h"
 #include "content/browser/service_worker/service_worker_quota_client.h"
 #include "content/browser/service_worker/service_worker_request_handler.h"
+#include "content/browser/service_worker/service_worker_utils.h"
 #include "content/browser/storage_partition_impl.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/service_worker_context.h"
 #include "net/base/net_errors.h"
+#include "net/base/net_util.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "storage/browser/blob/blob_storage_context.h"
 #include "storage/browser/quota/quota_manager_proxy.h"
 #include "storage/browser/quota/special_storage_policy.h"
 
 namespace content {
 
 namespace {
 
 typedef std::set<std::string> HeaderNameSet;
@@ skipping 232 matching lines @@
     usage_info.scopes.push_back(registration_info.pattern);
     usage_info.total_size_bytes += registration_info.stored_version_size_bytes;
   }
 
   for (const auto& origin_info_pair : origins) {
     usage_infos.push_back(origin_info_pair.second);
   }
   callback.Run(usage_infos);
 }
 
+void ServiceWorkerContextWrapper::DidFindRegistrationForCheckHasServiceWorker(
+    const GURL& other_url,
+    const CheckHasServiceWorkerCallback& callback,
+    ServiceWorkerStatusCode status,
+    const scoped_refptr<ServiceWorkerRegistration>& registration) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  if (status != SERVICE_WORKER_OK) {
+    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+                            base::Bind(callback, false));
+    return;
+  }
+
+  DCHECK(registration);
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      base::Bind(callback, registration->active_version() &&
+                               ServiceWorkerUtils::ScopeMatches(
+                                   registration->pattern(), other_url)));
+}
+
 namespace {
 void StatusCodeToBoolCallbackAdapter(
     const ServiceWorkerContext::ResultCallback& callback,
     ServiceWorkerStatusCode code) {
   callback.Run(code == ServiceWorkerStatusCode::SERVICE_WORKER_OK);
 }
 
 void EmptySuccessCallback(bool success) {
 }
 }  // namespace
@@ skipping 11 matching lines @@
     return;
   }
   context()->UnregisterServiceWorkers(
       origin_url, base::Bind(&StatusCodeToBoolCallbackAdapter, result));
 }
 
 void ServiceWorkerContextWrapper::DeleteForOrigin(const GURL& origin_url) {
   DeleteForOrigin(origin_url, base::Bind(&EmptySuccessCallback));
 }
 
+void ServiceWorkerContextWrapper::CheckHasServiceWorker(
+    const GURL& url,
+    const GURL& other_url,
+    const CheckHasServiceWorkerCallback& callback) {
+  if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&ServiceWorkerContextWrapper::CheckHasServiceWorker, this,
+                   url, other_url, callback));
+    return;
+  }
+  if (!context_core_.get()) {
+    LOG(ERROR) << "ServiceWorkerContextCore is no longer alive.";
+    BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+                            base::Bind(callback, false));
+    return;
+  }
+  GURL stripped_url = net::SimplifyUrlForRequest(url);
+  context()->storage()->FindRegistrationForDocument(
+      stripped_url, base::Bind(&ServiceWorkerContextWrapper::
+                                   DidFindRegistrationForCheckHasServiceWorker,
+                               this, other_url, callback));
+}
+
 void ServiceWorkerContextWrapper::AddObserver(
     ServiceWorkerContextObserver* observer) {
   observer_list_->AddObserver(observer);
 }
 
 void ServiceWorkerContextWrapper::RemoveObserver(
     ServiceWorkerContextObserver* observer) {
   observer_list_->RemoveObserver(observer);
 }
 
@@ skipping 56 matching lines @@
     context_core_.reset();
     return;
   }
   context_core_.reset(new ServiceWorkerContextCore(context_core_.get(), this));
   DVLOG(1) << "Restarted ServiceWorkerContextCore successfully.";
 
   observer_list_->Notify(&ServiceWorkerContextObserver::OnStorageWiped);
 }
 
 }  // namespace content