Quota: Factor out (Mock)QuotaManagerProxy into its own file for readability

webkit/browser/quota/quota_manager_proxy.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 "webkit/browser/quota/quota_manager_proxy.h"
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/callback.h"
+#include "base/sequenced_task_runner.h"
+#include "base/single_thread_task_runner.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/task_runner_util.h"
+
+namespace quota {
+
+namespace {
+
+void DidGetUsageAndQuota(
+    base::SequencedTaskRunner* original_task_runner,
+    const QuotaManagerProxy::GetUsageAndQuotaCallback& callback,
+    QuotaStatusCode status, int64 usage, int64 quota) {
+  if (!original_task_runner->RunsTasksOnCurrentThread()) {
+    original_task_runner->PostTask(
+        FROM_HERE,
+        base::Bind(&DidGetUsageAndQuota,
+                   make_scoped_refptr(original_task_runner),
+                   callback, status, usage, quota));
+    return;
+  }
+  callback.Run(status, usage, quota);
+}
+
+}  // namespace
+
+void QuotaManagerProxy::RegisterClient(QuotaClient* client) {
+  if (!io_thread_->BelongsToCurrentThread() &&
+      io_thread_->PostTask(
+          FROM_HERE,
+          base::Bind(&QuotaManagerProxy::RegisterClient, this, client))) {
+    return;
+  }
+
+  if (manager_)
+    manager_->RegisterClient(client);
+  else
+    client->OnQuotaManagerDestroyed();
+}
+
+void QuotaManagerProxy::NotifyStorageAccessed(
+    QuotaClient::ID client_id,
+    const GURL& origin,
+    StorageType type) {
+  if (!io_thread_->BelongsToCurrentThread()) {
+    io_thread_->PostTask(
+        FROM_HERE,
+        base::Bind(&QuotaManagerProxy::NotifyStorageAccessed, this, client_id,
+                   origin, type));
+    return;
+  }
+
+  if (manager_)
+    manager_->NotifyStorageAccessed(client_id, origin, type);
+}
+
+void QuotaManagerProxy::NotifyStorageModified(
+    QuotaClient::ID client_id,
+    const GURL& origin,
+    StorageType type,
+    int64 delta) {
+  if (!io_thread_->BelongsToCurrentThread()) {
+    io_thread_->PostTask(
+        FROM_HERE,
+        base::Bind(&QuotaManagerProxy::NotifyStorageModified, this, client_id,
+                   origin, type, delta));
+    return;
+  }
+
+  if (manager_)
+    manager_->NotifyStorageModified(client_id, origin, type, delta);
+}
+
+void QuotaManagerProxy::NotifyOriginInUse(
+    const GURL& origin) {
+  if (!io_thread_->BelongsToCurrentThread()) {
+    io_thread_->PostTask(
+        FROM_HERE,
+        base::Bind(&QuotaManagerProxy::NotifyOriginInUse, this, origin));
+    return;
+  }
+
+  if (manager_)
+    manager_->NotifyOriginInUse(origin);
+}
+
+void QuotaManagerProxy::NotifyOriginNoLongerInUse(
+    const GURL& origin) {
+  if (!io_thread_->BelongsToCurrentThread()) {
+    io_thread_->PostTask(
+        FROM_HERE,
+        base::Bind(&QuotaManagerProxy::NotifyOriginNoLongerInUse, this,
+                   origin));
+    return;
+  }
+  if (manager_)
+    manager_->NotifyOriginNoLongerInUse(origin);
+}
+
+void QuotaManagerProxy::SetUsageCacheEnabled(QuotaClient::ID client_id,
+                                             const GURL& origin,
+                                             StorageType type,
+                                             bool enabled) {
+  if (!io_thread_->BelongsToCurrentThread()) {
+    io_thread_->PostTask(
+        FROM_HERE,
+        base::Bind(&QuotaManagerProxy::SetUsageCacheEnabled, this,
+                   client_id, origin, type, enabled));
+    return;
+  }
+  if (manager_)
+    manager_->SetUsageCacheEnabled(client_id, origin, type, enabled);
+}
+
+void QuotaManagerProxy::GetUsageAndQuota(
+    base::SequencedTaskRunner* original_task_runner,
+    const GURL& origin,
+    StorageType type,
+    const GetUsageAndQuotaCallback& callback) {
+  if (!io_thread_->BelongsToCurrentThread()) {
+    io_thread_->PostTask(
+        FROM_HERE,
+        base::Bind(&QuotaManagerProxy::GetUsageAndQuota, this,
+                   make_scoped_refptr(original_task_runner),
+                   origin, type, callback));
+    return;
+  }
+  if (!manager_) {
+    DidGetUsageAndQuota(original_task_runner, callback, kQuotaErrorAbort, 0, 0);
+    return;
+  }
+  manager_->GetUsageAndQuota(
+      origin, type,
+      base::Bind(&DidGetUsageAndQuota,
+                 make_scoped_refptr(original_task_runner), callback));
+}
+
+QuotaManager* QuotaManagerProxy::quota_manager() const {
+  DCHECK(!io_thread_.get() || io_thread_->BelongsToCurrentThread());
+  return manager_;
+}
+
+QuotaManagerProxy::QuotaManagerProxy(
+    QuotaManager* manager, base::SingleThreadTaskRunner* io_thread)
+    : manager_(manager), io_thread_(io_thread) {
+}
+
+QuotaManagerProxy::~QuotaManagerProxy() {
+}
+
+}  // namespace quota