Framing for a DOMStorage backend that does not depend on in-process-webkit.

webkit/dom_storage/dom_storage_area.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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/in_process_webkit/dom_storage_area.h"
+#include "webkit/dom_storage/dom_storage_area.h"
 
-#include "base/logging.h"
-#include "content/browser/in_process_webkit/dom_storage_context.h"
-#include "content/browser/in_process_webkit/dom_storage_namespace.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityOrigin.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebStorageArea.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebURL.h"
-#include "webkit/glue/webkit_glue.h"
-
-using WebKit::WebSecurityOrigin;
-using WebKit::WebStorageArea;
-using WebKit::WebString;
-using WebKit::WebURL;
+namespace dom_storage {
 
 DOMStorageArea::DOMStorageArea(
-    const string16& origin,
-    int64 id,
-    DOMStorageNamespace* owner)
-    : origin_(origin),
-      origin_url_(origin),
-      id_(id),
-      owner_(owner) {
-  DCHECK(owner_);
+    const GURL& origin, const FilePath& backing_file) {
 }
 
 DOMStorageArea::~DOMStorageArea() {
 }
 
-unsigned DOMStorageArea::Length() {
-  CreateWebStorageAreaIfNecessary();
-  return storage_area_->length();
+int DOMStorageArea::Length() {
+  return 0;
 }
 
-NullableString16 DOMStorageArea::Key(unsigned index) {
-  CreateWebStorageAreaIfNecessary();
-  return storage_area_->key(index);
+NullableString16 DOMStorageArea::Key(int index) {
+  return NullableString16(true);
 }
 
 NullableString16 DOMStorageArea::GetItem(const string16& key) {
-  CreateWebStorageAreaIfNecessary();
-  return storage_area_->getItem(key);
+  return NullableString16(true);
 }
 
-NullableString16 DOMStorageArea::SetItem(
+bool DOMStorageArea::SetItem(
     const string16& key, const string16& value,
-    WebStorageArea::Result* result) {
-  CreateWebStorageAreaIfNecessary();
-  WebString old_value;
-  storage_area_->setItem(key, value, WebURL(), *result, old_value);
-  return old_value;
+    NullableString16* old_value) {
+  return false;
 }
 
-NullableString16 DOMStorageArea::RemoveItem(const string16& key) {
-  CreateWebStorageAreaIfNecessary();
-  WebString old_value;
-  storage_area_->removeItem(key, WebURL(), old_value);
-  return old_value;
+bool DOMStorageArea::RemoveItem(
+    const string16& key,
+    NullableString16* old_value) {
+  return false;
 }
 
 bool DOMStorageArea::Clear() {
-  CreateWebStorageAreaIfNecessary();
-  bool somethingCleared;
-  storage_area_->clear(WebURL(), somethingCleared);
-  return somethingCleared;
+  return false;
 }
 
 void DOMStorageArea::PurgeMemory() {
-  storage_area_.reset();
 }
 
-void DOMStorageArea::CreateWebStorageAreaIfNecessary() {
-  if (!storage_area_.get())
-    storage_area_.reset(owner_->CreateWebStorageArea(origin_));
-}
+}  // namespace dom_storage