Move IsRendererTransferNeededForNavigation to RenderFrameHostManager.

content/browser/loader/cross_site_resource_handler.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 "content/browser/loader/cross_site_resource_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 68 matching lines @@
         params.global_request_id, cross_site_transferring_request.Pass(),
         params.transfer_url_chain, params.referrer,
         params.page_transition, params.should_replace_current_entry);
   } else if (leak_requests_for_testing_ && cross_site_transferring_request) {
     // Some unit tests expect requests to be leaked in this case, so they can
     // pass them along manually.
     cross_site_transferring_request->ReleaseRequest();
   }
 }
 
-// Determines whether a navigation to |dest_url| may be completed using an
-// existing RenderFrameHost, or whether transferring to a new RenderFrameHost
-// backed by a different render process is required. This is a security policy
-// check determined by the current site isolation mode, and must be done
-// before the resource at |dest_url| is delivered to |rfh|.
-//
-// When this function returns true for a subframe, an out-of-process iframe
-// must be created.
-//
-// TODO(nick): Move this function to RFHM.
-bool IsRendererTransferNeededForNavigation(RenderFrameHostImpl* rfh,
-                                           const GURL& dest_url) {
-  // A transfer is not needed if the current SiteInstance doesn't yet have a
-  // site.  This is the case for tests that use NavigateToURL.
-  if (!rfh->GetSiteInstance()->HasSite())
-    return false;
-
-  // For now, GuestViews never transfer on cross-site navigations.
-  WebContentsImpl* web_contents =
-      static_cast<WebContentsImpl*>(WebContents::FromRenderFrameHost(rfh));
-  if (web_contents->GetBrowserPluginGuest())
-    return false;
-
-  GURL effective_url = SiteInstanceImpl::GetEffectiveURL(
-      rfh->GetSiteInstance()->GetBrowserContext(), dest_url);
-
-  // TODO(nasko, nick): These following --site-per-process checks are
-  // overly simplistic. Update them to match all the cases
-  // considered by RenderFrameHostManager::DetermineSiteInstanceForURL.
-  if (SiteInstance::IsSameWebSite(rfh->GetSiteInstance()->GetBrowserContext(),
-                                  rfh->GetSiteInstance()->GetSiteURL(),
-                                  dest_url)) {
-    return false;  // The same site, no transition needed.
-  }
-
-  // The sites differ. If either one requires a dedicated process,
-  // then a transfer is needed.
-  return rfh->GetSiteInstance()->RequiresDedicatedProcess() ||
-         SiteIsolationPolicy::DoesSiteRequireDedicatedProcess(effective_url);
-}
-
 // Returns whether a transfer is needed by doing a check on the UI thread.
 CrossSiteResourceHandler::NavigationDecision
 CheckNavigationPolicyOnUI(GURL real_url, int process_id, int render_frame_id) {
   CHECK(SiteIsolationPolicy::AreCrossProcessFramesPossible());
   RenderFrameHostImpl* rfh =
       RenderFrameHostImpl::FromID(process_id, render_frame_id);
 
   // Without a valid RFH against which to check, we must cancel the request,
   // to prevent the resource at |url| from being delivered to a potentially
   // unsuitable renderer process.
   if (!rfh)
     return CrossSiteResourceHandler::NavigationDecision::CANCEL_REQUEST;
 
-  if (IsRendererTransferNeededForNavigation(rfh, real_url))
+  RenderFrameHostManager* manager = rfh->frame_tree_node()->render_manager();
+  if (manager->IsRendererTransferNeededForNavigation(rfh, real_url))
     return CrossSiteResourceHandler::NavigationDecision::TRANSFER_REQUIRED;
   else
     return CrossSiteResourceHandler::NavigationDecision::USE_EXISTING_RENDERER;
 }
 
 }  // namespace
 
 CrossSiteResourceHandler::CrossSiteResourceHandler(
     scoped_ptr<ResourceHandler> next_handler,
     net::URLRequest* request)
@@ skipping 267 matching lines @@
     controller()->Resume();
   }
 }
 
 void CrossSiteResourceHandler::OnDidDefer() {
   did_defer_ = true;
   request()->LogBlockedBy("CrossSiteResourceHandler");
 }
 
 }  // namespace content