Replacing WebUIBindings use of CPPBoundClass with v8::Extension.

content/renderer/web_ui_extension_data.cc

+// 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/renderer/web_ui_extension_data.h"
+
+#include "base/utf_string_conversions.h"
+#include "content/common/view_messages.h"
+#include "content/public/renderer/render_view.h"
+
+namespace content {
+
+WebUIExtensionData::WebUIExtensionData(RenderView* render_view)
+    : RenderViewObserver(render_view),
+      RenderViewObserverTracker<WebUIExtensionData>(render_view) {
+}
+
+WebUIExtensionData::~WebUIExtensionData() {
+}
+
+string16 WebUIExtensionData::GetValue(const string16& key) const {
+  std::map<string16, string16>::const_iterator it = variable_map_.find(key);
+  if (it == variable_map_.end())
+    return string16();
+  return it->second;
+}
+
+bool WebUIExtensionData::OnMessageReceived(const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(WebUIExtensionData, message)
+    IPC_MESSAGE_HANDLER(ViewMsg_SetWebUIProperty, OnSetWebUIProperty)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void WebUIExtensionData::OnSetWebUIProperty(const std::string& name,
+                                            const std::string& value) {
+  variable_map_[UTF8ToUTF16(name)] = UTF8ToUTF16(value);
+}
+
+}  // namespace content