Remove --enable-strict-site-isolation

content/renderer/render_frame_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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 4132 matching lines @@
   // This is fine normally, except if we're showing UI from one security
   // context and they're trying to navigate to a different context.
   const GURL& url = info.urlRequest.url();
 
   // A content initiated navigation may have originated from a link-click,
   // script, drag-n-drop operation, etc.
   DocumentState* document_state = static_cast<DocumentState*>(info.extraData);
   bool is_content_initiated =
       document_state->navigation_state()->IsContentInitiated();
 
-  // Experimental:
-  // If --enable-strict-site-isolation is enabled, send all top-level
-  // navigations to the browser to let it swap processes when crossing site
-  // boundaries.  This is currently expected to break some script calls and
-  // navigations, such as form submissions.
-  bool force_swap_due_to_flag =
-      command_line.HasSwitch(switches::kEnableStrictSiteIsolation);
-  if (force_swap_due_to_flag &&
-      !info.frame->parent() && (is_content_initiated || info.isRedirect)) {
-    WebString origin_str = info.frame->document().securityOrigin().toString();
-    GURL frame_url(origin_str.utf8().data());
-    // TODO(cevans): revisit whether this site check is still necessary once
-    // crbug.com/101395 is fixed.
-    bool same_domain_or_host =
-        net::registry_controlled_domains::SameDomainOrHost(
-            frame_url,
-            url,
-            net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
-    // Only keep same-site (domain + scheme) and data URLs in the same process.
-    bool is_same_site =
-        (same_domain_or_host && frame_url.scheme() == url.scheme()) ||
-        url.SchemeIs(url::kDataScheme);
-    if (!is_same_site) {
-      OpenURL(info.frame, url, referrer, info.defaultPolicy);
-      return blink::WebNavigationPolicyIgnore;
-    }
-  }
-
   // If the browser is interested, then give it a chance to look at the request.
   if (is_content_initiated) {
     bool is_form_post =
         ((info.navigationType == blink::WebNavigationTypeFormSubmitted) ||
             (info.navigationType == blink::WebNavigationTypeFormResubmitted)) &&
         EqualsASCII(info.urlRequest.httpMethod(), "POST");
     bool browser_handles_request =
         render_view_->renderer_preferences_
             .browser_handles_non_local_top_level_requests
         && IsNonLocalTopLevelNavigation(url, info.frame, info.navigationType,
@@ skipping 722 matching lines @@
 #elif defined(ENABLE_BROWSER_CDMS)
         cdm_manager_,
 #endif
         this);
   }
 
   return cdm_factory_;
 }
 
 }  // namespace content