don't display platform app resources in normal browser windows

chrome/renderer/chrome_content_renderer_client.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 "chrome/renderer/chrome_content_renderer_client.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 778 matching lines @@
     const GURL& url,
     GURL* new_url) {
   // Check whether the request should be allowed. If not allowed, we reset the
   // URL to something invalid to prevent the request and cause an error.
   if (url.SchemeIs(chrome::kExtensionScheme) &&
       !extensions::ResourceRequestPolicy::CanRequestResource(
           url,
           frame,
           transition_type,
           extension_dispatcher_->extensions())) {
-    *new_url = GURL("chrome-extension://invalid/");
+    *new_url = GURL(chrome::kExtensionInvalidRequestURL);
     return true;
 
   }
 
   if (url.SchemeIs(chrome::kExtensionResourceScheme) &&
       !extensions::ResourceRequestPolicy::CanRequestExtensionResourceScheme(
           url,
           frame)) {
-    *new_url = GURL("chrome-extension-resource://invalid/");
+    *new_url = GURL(chrome::kExtensionResourceInvalidRequestURL);
     return true;
   }
 
   return false;
 }
 
 bool ChromeContentRendererClient::ShouldPumpEventsDuringCookieMessage() {
   // We no longer pump messages, even under Chrome Frame. We rely on cookie
   // read requests handled by CF not putting up UI or causing other actions
   // that would require us to pump messages. This fixes http://crbug.com/110090.
@@ skipping 140 matching lines @@
 bool ChromeContentRendererClient::IsOtherExtensionWithWebRequestInstalled() {
   return extension_dispatcher_->IsOtherExtensionWithWebRequestInstalled();
 }
 
 void ChromeContentRendererClient::RegisterPPAPIInterfaceFactories(
     webkit::ppapi::PpapiInterfaceFactoryManager* factory_manager) {
   factory_manager->RegisterFactory(ChromePPAPIInterfaceFactory);
 }
 
 }  // namespace chrome