Switch usage cache code to use FileSystemQuotaUtil in FileWriterDelegate

patch based on: http://codereview.chromium.org/6973005/

BUG=74841
TEST=FileWriterDelegate.*

Review URL: http://codereview.chromium.org/7012037

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@85622 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 65 insertions, 0 deletions

diff --git a/webkit/fileapi/file_system_quota_util.cc b/webkit/fileapi/file_system_quota_util.cc
new file mode 100644
index 0000000..3d0fab4
--- /dev/null
+++ b/webkit/fileapi/file_system_quota_util.cc
@@ -0,0 +1,65 @@
+// Copyright (c) 2011 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/fileapi/file_system_quota_util.h"
+
+#include "base/compiler_specific.h"
+#include "base/message_loop_proxy.h"
+
+namespace fileapi {
+
+void FileSystemQuotaUtil::Proxy::UpdateOriginUsage(
+    quota::QuotaManagerProxy* proxy, const GURL& origin_url,
+    fileapi::FileSystemType type, int64 delta) {
+  if (!file_thread_->BelongsToCurrentThread()) {
+    file_thread_->PostTask(FROM_HERE, NewRunnableMethod(
+        this, &Proxy::UpdateOriginUsage, proxy, origin_url, type, delta));
+    return;
+  }
+  if (quota_util_)
+    quota_util_->UpdateOriginUsageOnFileThread(proxy, origin_url, type, delta);
+}
+
+void FileSystemQuotaUtil::Proxy::StartUpdateOrigin(
+    const GURL& origin_url, fileapi::FileSystemType type) {
+  if (!file_thread_->BelongsToCurrentThread()) {
+    file_thread_->PostTask(FROM_HERE, NewRunnableMethod(
+        this, &Proxy::StartUpdateOrigin, origin_url, type));
+    return;
+  }
+  if (quota_util_)
+    quota_util_->StartUpdateOriginOnFileThread(origin_url, type);
+}
+
+void FileSystemQuotaUtil::Proxy::EndUpdateOrigin(
+    const GURL& origin_url, fileapi::FileSystemType type) {
+  if (!file_thread_->BelongsToCurrentThread()) {
+    file_thread_->PostTask(FROM_HERE, NewRunnableMethod(
+        this, &Proxy::EndUpdateOrigin, origin_url, type));
+    return;
+  }
+  if (quota_util_)
+    quota_util_->EndUpdateOriginOnFileThread(origin_url, type);
+}
+
+FileSystemQuotaUtil::Proxy::Proxy(
+    FileSystemQuotaUtil* quota_util,
+    base::MessageLoopProxy* file_thread)
+    : quota_util_(quota_util),
+      file_thread_(file_thread) {
+  DCHECK(quota_util);
+}
+
+FileSystemQuotaUtil::Proxy::~Proxy() {
+}
+
+FileSystemQuotaUtil::FileSystemQuotaUtil(base::MessageLoopProxy* file_thread)
+    : proxy_(new Proxy(ALLOW_THIS_IN_INITIALIZER_LIST(this), file_thread)) {
+}
+
+FileSystemQuotaUtil::~FileSystemQuotaUtil() {
+  proxy_->quota_util_ = NULL;
+}
+
+}  // namespace fileapi