Move existing kSitePerProcess checks to a policy-oracle object

content/renderer/render_view_browsertest.cc

Index: content/renderer/render_view_browsertest.cc
diff --git a/content/renderer/render_view_browsertest.cc b/content/renderer/render_view_browsertest.cc
index b98d726ee07f56a226c1e92b47f9c4b9846e6eb1..e0497d8e9769afa943f70174ac99c3da9de9b7f8 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -24,6 +24,7 @@
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/page_zoom.h"
+#include "content/public/common/site_isolation_policy.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/url_utils.h"
 #include "content/public/renderer/content_renderer_client.h"
@@ -764,8 +765,7 @@ TEST_F(RenderViewImplTest, ReloadWhileSwappedOut) {
 TEST_F(RenderViewImplTest, OriginReplicationForSwapOut) {
   // This test should only run with --site-per-process, since origin
   // replication only happens in that mode.
-  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kSitePerProcess))
+  if (!SiteIsolationPolicy::AreAllSitesIsolatedForTesting())
     return;
 
   LoadHTML(