Experimental app list: Custom launcher pages have app APIs and style.

apps/custom_launcher_page_contents.cc

+// Copyright 2014 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 "apps/custom_launcher_page_contents.h"
+
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/site_instance.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/common/renderer_preferences.h"
+#include "extensions/common/extension_messages.h"
+
+namespace apps {
+
+CustomLauncherPageContents::CustomLauncherPageContents() {
+}
+
+CustomLauncherPageContents::~CustomLauncherPageContents() {
+}
+
+void CustomLauncherPageContents::Initialize(content::BrowserContext* context,
+                                            const GURL& url) {
+  extension_function_dispatcher_.reset(
+      new extensions::ExtensionFunctionDispatcher(context, this));
+
+  web_contents_.reset(
+      content::WebContents::Create(content::WebContents::CreateParams(
+          context, content::SiteInstance::CreateForURL(context, url))));
+
+  Observe(web_contents());
+  web_contents_->GetMutableRendererPrefs()
+      ->browser_handles_all_top_level_requests = true;
+  web_contents_->GetRenderViewHost()->SyncRendererPrefs();
+
+  // This observer will activate the extension when it is navigated to, which
+  // allows Dispatcher to give it the proper context and makes it behave like an
+  // extension.
+  extensions::ChromeExtensionWebContentsObserver::CreateForWebContents(
+      web_contents());
+
+  web_contents_->GetController().LoadURL(url,
+                                         content::Referrer(),
+                                         content::PAGE_TRANSITION_AUTO_TOPLEVEL,
+                                         std::string());
+}
+
+bool CustomLauncherPageContents::OnMessageReceived(
+    const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(CustomLauncherPageContents, message)
+  IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
+  IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+extensions::WindowController*
+CustomLauncherPageContents::GetExtensionWindowController() const {
+  return NULL;
+}
+
+content::WebContents* CustomLauncherPageContents::GetAssociatedWebContents()
+    const {
+  return web_contents();
+}
+
+void CustomLauncherPageContents::OnRequest(
+    const ExtensionHostMsg_Request_Params& params) {
+  extension_function_dispatcher_->Dispatch(params,
+                                           web_contents_->GetRenderViewHost());
+}
+
+}  // namespace apps