Added quota client for serviceworker. Enables 'clear past <time> data'.

content/browser/service_worker/service_worker_quota_client.cc

+// Copyright 2014 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_quota_client.h"
+
+#include "base/bind.h"
+#include "content/browser/service_worker/service_worker_context_wrapper.h"
+#include "content/public/browser/browser_thread.h"
+
+using storage::QuotaClient;
+
+namespace content {
+namespace {
+void ReportOrigins(const QuotaClient::GetOriginsCallback& callback,
+                   bool restrict_on_host,
+                   const std::string host,
+                   const std::vector<ServiceWorkerUsageInfo>& usage_info) {
+  std::set<GURL> origins;
+  for (const ServiceWorkerUsageInfo& info : usage_info) {
+    if (restrict_on_host && info.origin.host() != host) {
+      continue;
+    }
+    origins.insert(info.origin);
+  }
+  callback.Run(origins);
+}
+
+void ReportToQuotaStatus(const QuotaClient::DeletionCallback& callback,
+                         bool status) {
+  callback.Run(status ? storage::QuotaStatusCode::kQuotaStatusOk
+                      : storage::QuotaStatusCode::kQuotaStatusUnknown);
+}
+}  // namespace
+
+ServiceWorkerQuotaClient::ServiceWorkerQuotaClient(
+    ServiceWorkerContextWrapper* context)
+    : context_(context) {
+}
+
+ServiceWorkerQuotaClient::~ServiceWorkerQuotaClient() {
+}
+
+QuotaClient::ID ServiceWorkerQuotaClient::id() const {
+  return QuotaClient::kServiceWorker;
+}
+
+void ServiceWorkerQuotaClient::OnQuotaManagerDestroyed() {
+  delete this;
+}
+
+void ServiceWorkerQuotaClient::GetOriginUsage(
+    const GURL& origin,
+    storage::StorageType type,
+    const GetUsageCallback& callback) {
+  // TODO(dmurph): Add usage fetching when information is available.
+  callback.Run(0);
+}
+
+void ServiceWorkerQuotaClient::GetOriginsForType(
+    storage::StorageType type,
+    const GetOriginsCallback& callback) {
+  if (type != storage::StorageType::kStorageTypeTemporary) {
+    callback.Run(std::set<GURL>());
+    return;
+  }
+  context_->GetAllOriginsInfo(base::Bind(&ReportOrigins, callback, false, ""));
+}
+
+void ServiceWorkerQuotaClient::GetOriginsForHost(
+    storage::StorageType type,
+    const std::string& host,
+    const GetOriginsCallback& callback) {
+  if (type != storage::StorageType::kStorageTypeTemporary) {
+    callback.Run(std::set<GURL>());
+    return;
+  }
+  context_->GetAllOriginsInfo(base::Bind(&ReportOrigins, callback, true, host));
+}
+
+void ServiceWorkerQuotaClient::DeleteOriginData(
+    const GURL& origin,
+    storage::StorageType type,
+    const DeletionCallback& callback) {
+  if (type != storage::StorageType::kStorageTypeTemporary) {
+    callback.Run(storage::QuotaStatusCode::kQuotaStatusOk);
+    return;
+  }
+  context_->DeleteForOrigin(origin, base::Bind(&ReportToQuotaStatus, callback));
+}
+
+bool ServiceWorkerQuotaClient::DoesSupport(storage::StorageType type) const {
+  return type == storage::StorageType::kStorageTypeTemporary;
+}
+
+}  // namespace content