Make MediaInternalsUI talk to MediaInternals.

chrome/browser/ui/webui/media_internals/media_internals_handler.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/browser/ui/webui/media_internals/media_internals_handler.h"
+
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/ui/webui/media_internals/media_internals_proxy.h"
+#include "content/browser/browser_thread.h"
+#include "content/browser/renderer_host/render_view_host.h"
+
+MediaInternalsMessageHandler::MediaInternalsMessageHandler()
+    : proxy_(new MediaInternalsProxy()) {}
+
+MediaInternalsMessageHandler::~MediaInternalsMessageHandler() {
+  proxy_->Detach();
+}
+
+WebUIMessageHandler* MediaInternalsMessageHandler::Attach(WebUI* web_ui) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  WebUIMessageHandler* result = WebUIMessageHandler::Attach(web_ui);
+  proxy_->Attach(this);
+  return result;
+}
+
+void MediaInternalsMessageHandler::RegisterMessages() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  web_ui_->RegisterMessageCallback(
+      "getEverything",
+      NewCallback(this, &MediaInternalsMessageHandler::OnGetEverything));
+}
+
+void MediaInternalsMessageHandler::OnGetEverything(const ListValue* list) {
+  proxy_->GetEverything();
+}
+
+void MediaInternalsMessageHandler::OnUpdate(const string16& update) {
+  web_ui_->GetRenderViewHost()->ExecuteJavascriptInWebFrame(string16(), update);
+}