Remove SiteIsolationPolicy::IsSwappedOutStateForbidden().

content/browser/frame_host/frame_tree.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/frame_tree.h"
 
 #include <stddef.h>
 
 #include <queue>
 #include <utility>
@@ skipping 234 matching lines @@
     NOTREACHED() << "Unexpected RemoveFrame call for main frame.";
     return;
   }
 
   parent->RemoveChild(child);
 }
 
 void FrameTree::CreateProxiesForSiteInstance(
     FrameTreeNode* source,
     SiteInstance* site_instance) {
-  // Create the swapped out RVH for the new SiteInstance. This will create
-  // a top-level swapped out RFH as well, which will then be wrapped by a
-  // RenderFrameProxyHost.
+  // Create the RenderFrameProxyHost for the new SiteInstance.
   if (!source || !source->IsMainFrame()) {
     RenderViewHostImpl* render_view_host = GetRenderViewHost(site_instance);
     if (!render_view_host) {
-      if (SiteIsolationPolicy::IsSwappedOutStateForbidden()) {
-        root()->render_manager()->CreateRenderFrameProxy(site_instance);
-      } else {
-        root()->render_manager()->CreateRenderFrame(
-            site_instance, CREATE_RF_SWAPPED_OUT | CREATE_RF_HIDDEN, nullptr);
-      }
+      root()->render_manager()->CreateRenderFrameProxy(site_instance);
     } else {
       root()->render_manager()->EnsureRenderViewInitialized(render_view_host,
                                                             site_instance);
     }
   }
 
   // Proxies are created in the FrameTree in response to a node navigating to a
   // new SiteInstance. Since |source|'s navigation will replace the currently
   // loaded document, the entire subtree under |source| will be removed.
   for (FrameTreeNode* node : NodesExcept(source)) {
@@ skipping 226 matching lines @@
   // This is only used to set page-level focus in cross-process subframes, and
   // requests to set focus in main frame's SiteInstance are ignored.
   if (instance != root_manager->current_frame_host()->GetSiteInstance()) {
     RenderFrameProxyHost* proxy =
         root_manager->GetRenderFrameProxyHost(instance);
     proxy->Send(new InputMsg_SetFocus(proxy->GetRoutingID(), is_focused));
   }
 }
 
 }  // namespace content