Move existing kSitePerProcess checks to a policy-oracle object

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/render_frame_host_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
@@ skipping 44 matching lines @@
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/permission_manager.h"
 #include "content/public/browser/permission_type.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/stream_handle.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/isolated_world_ids.h"
+#include "content/public/common/site_isolation_policy.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/url_utils.h"
 #include "ui/accessibility/ax_tree.h"
 #include "ui/accessibility/ax_tree_update.h"
 #include "url/gurl.h"
 
 #if defined(OS_ANDROID)
 #include "content/browser/mojo/service_registrar_android.h"
 #endif
 
@@ skipping 1235 matching lines @@
     const CommonNavigationParams& common_params,
     const BeginNavigationParams& begin_params,
     scoped_refptr<ResourceRequestBody> body) {
   CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableBrowserSideNavigation));
   frame_tree_node()->navigator()->OnBeginNavigation(
       frame_tree_node(), common_params, begin_params, body);
 }
 
 void RenderFrameHostImpl::OnDispatchLoad() {
-  CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kSitePerProcess));
+  CHECK(SiteIsolationPolicy::AreCrossProcessFramesPossible());
   // Only frames with an out-of-process parent frame should be sending this
   // message.
   RenderFrameProxyHost* proxy =
       frame_tree_node()->render_manager()->GetProxyToParent();
   if (!proxy) {
     bad_message::ReceivedBadMessage(GetProcess(),
                                     bad_message::RFH_NO_PROXY_TO_PARENT);
     return;
   }
 
@@ skipping 778 matching lines @@
   // We may be returning to an existing NavigationEntry that had been granted
   // file access.  If this is a different process, we will need to grant the
   // access again.  The files listed in the page state are validated when they
   // are received from the renderer to prevent abuse.
   if (request_params.page_state.IsValid()) {
     render_view_host_->GrantFileAccessFromPageState(request_params.page_state);
   }
 }
 
 }  // namespace content