Move existing kSitePerProcess checks to a policy-oracle object

content/browser/frame_host/render_frame_host_manager_unittest.cc

Index: content/browser/frame_host/render_frame_host_manager_unittest.cc
diff --git a/content/browser/frame_host/render_frame_host_manager_unittest.cc b/content/browser/frame_host/render_frame_host_manager_unittest.cc
index 4fc6640b860881e0fe4bfed4f4cd0f7179dc6e7c..c44a7e4dd7d6b37b176b78640b28750d5ced3c80 100644
--- a/content/browser/frame_host/render_frame_host_manager_unittest.cc
+++ b/content/browser/frame_host/render_frame_host_manager_unittest.cc
@@ -31,6 +31,7 @@
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/javascript_message_type.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/test/browser_test_utils.h"
@@ -2036,8 +2037,8 @@ TEST_F(RenderFrameHostManagerTest,
 // deleted when the node is detached. Motivated by http://crbug.com/441357 and
 // http://crbug.com/444955.
 TEST_F(RenderFrameHostManagerTest, DetachPendingChild) {
-  base::CommandLine::ForCurrentProcess()->AppendSwitch(
-      switches::kSitePerProcess);
+  SiteIsolationPolicy::IsolateAllSitesForTesting(
+      base::CommandLine::ForCurrentProcess());
 
   const GURL kUrlA("http://www.google.com/");
   const GURL kUrlB("http://webkit.org/");
@@ -2160,8 +2161,8 @@ TEST_F(RenderFrameHostManagerTest, DetachPendingChild) {
 // tab navigates away without reloading. The second tab's navigation shouldn't
 // mess with the first tab's content. Motivated by http://crbug.com/473714.
 TEST_F(RenderFrameHostManagerTest, TwoTabsCrashOneReloadsOneLeaves) {
-  base::CommandLine::ForCurrentProcess()->AppendSwitch(
-      switches::kSitePerProcess);
+  SiteIsolationPolicy::IsolateAllSitesForTesting(
+      base::CommandLine::ForCurrentProcess());
 
   const GURL kUrl1("http://www.google.com/");
   const GURL kUrl2("http://webkit.org/");