Switch LevelDBWrapper::GetAll to use the new Mojo sync IPC mechanism.

content/renderer/dom_storage/local_storage_cached_areas.cc

Index: content/renderer/dom_storage/local_storage_cached_areas.cc
diff --git a/content/renderer/dom_storage/local_storage_cached_areas.cc b/content/renderer/dom_storage/local_storage_cached_areas.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5918e5aa2cf1ff864efb1e667525552cd9cee99f
--- /dev/null
+++ b/content/renderer/dom_storage/local_storage_cached_areas.cc
@@ -0,0 +1,36 @@
+// Copyright 2016 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/renderer/dom_storage/local_storage_cached_areas.h"
+
+#include "content/renderer/dom_storage/local_storage_cached_area.h"
+
+namespace content {
+
+LocalStorageCachedAreas::LocalStorageCachedAreas(
+    StoragePartitionService* storage_partition_service)
+    : storage_partition_service_(storage_partition_service) {
+}
+
+LocalStorageCachedAreas::~LocalStorageCachedAreas() {
+}
+
+scoped_refptr<LocalStorageCachedArea>
+LocalStorageCachedAreas::GetLocalStorageCachedArea(
+    const url::Origin& origin) {
+  if (cached_areas_.find(origin) == cached_areas_.end()) {
+    cached_areas_[origin] = new LocalStorageCachedArea(
+        origin, storage_partition_service_, this);
+  }
+
+  return make_scoped_refptr(cached_areas_[origin]);
+}
+
+void LocalStorageCachedAreas::LocalStorageCacheAreaClosed(
+    LocalStorageCachedArea* cached_area) {
+  DCHECK(cached_areas_.find(cached_area->origin()) != cached_areas_.end());
+  cached_areas_.erase(cached_area->origin());
+}
+
+}  // namespace content