Introduce RenderView::Observer interface so that RenderView doesn't have to k...

chrome/renderer/render_view_observer.cc

+// 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 "chrome/renderer/render_view_observer.h"
+
+#include "chrome/renderer/render_view.h"
+
+RenderViewObserver::RenderViewObserver(RenderView* render_view)
+    : render_view_(render_view), routing_id_(render_view->routing_id()) {
+  render_view_->AddObserver(this);
+}
+
+RenderViewObserver::~RenderViewObserver() {
+  if (render_view_)
+    render_view_->RemoveObserver(this);
+}
+
+void RenderViewObserver::OnDestruct() {
+  delete this;
+}
+
+bool RenderViewObserver::OnMessageReceived(const IPC::Message& message) {
+  return false;
+}
+
+bool RenderViewObserver::Send(IPC::Message* message) {
+  if (render_view_)
+    return render_view_->Send(message);
+
+  delete message;
+  return false;
+}