[DRAFT] Add new default stylesheet for platform apps.

chrome/browser/renderer_host/chrome_render_view_host_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/browser/renderer_host/chrome_render_view_host_observer.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/dom_operation_notification_details.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/net/predictor.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_messages.h"
+#include "chrome/common/extensions/platform_app_messages.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/browsing_instance.h"
 #include "content/browser/child_process_security_policy.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/site_instance.h"
 #include "content/public/browser/notification_service.h"
 #include "content/common/view_messages.h"
 
@@ skipping 75 matching lines @@
 
   if (extension->is_app()) {
     Send(new ExtensionMsg_ActivateApplication(extension->id()));
     // Though we already record the associated process ID for the renderer in
     // InitRenderViewHostForExtensions, the process might have crashed and been
     // restarted (hence the re-initialization), so we need to update that
     // mapping.
     profile_->GetExtensionService()->SetInstalledAppForRenderer(
         process->id(), extension);
   }
+  if (extension->is_platform_app()) {
+    Send(new PlatformAppMsg_IsPlatformApp());
+  }
 
   // Some extensions use chrome:// URLs.
   Extension::Type type = extension->GetType();
   if (type == Extension::TYPE_EXTENSION ||
       type == Extension::TYPE_PACKAGED_APP) {
     ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
         process->id(), chrome::kChromeUIScheme);
   }
 
   if (type == Extension::TYPE_EXTENSION ||
@@ skipping 39 matching lines @@
       content::Source<RenderViewHost>(render_view_host()),
       content::Details<DomOperationNotificationDetails>(&details));
 }
 
 void ChromeRenderViewHostObserver::OnFocusedEditableNodeTouched() {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_FOCUSED_EDITABLE_NODE_TOUCHED,
       content::Source<RenderViewHost>(render_view_host()),
       content::NotificationService::NoDetails());
 }