Prevent creating a swapped out RVH in the same SiteInstance as the current one.

content/public/test/browser_test_utils.cc

Index: content/public/test/browser_test_utils.cc
diff --git a/content/public/test/browser_test_utils.cc b/content/public/test/browser_test_utils.cc
index f16b854fc707bbd9141510ca527da68ba748472c..19b5070254425810d918a92f3ee60022caff9306 100644
--- a/content/public/test/browser_test_utils.cc
+++ b/content/public/test/browser_test_utils.cc
@@ -214,9 +214,11 @@ void WaitForLoadStop(WebContents* web_contents) {
 void CrashTab(WebContents* web_contents) {
   RenderProcessHost* rph = web_contents->GetRenderProcessHost();
   WindowedNotificationObserver observer(
-      NOTIFICATION_RENDERER_PROCESS_CLOSED,
+      NOTIFICATION_RENDERER_PROCESS_TERMINATED,

[ncarter (slow), 2013/11/12 03:38:26]

Change this back to to NOTIFICATION_RENDERER_PROCESS_CLOSED, otherwise you'll
see test hangs in various existing code.

[Charlie Reis, 2013/11/12 16:09:35]

Done.

       Source<RenderProcessHost>(rph));
+  LOG(INFO) << "CrashTab: Calling KillProcess.";
   base::KillProcess(rph->GetHandle(), 0, false);
+  LOG(INFO) << "CrashTab: Waiting for process to exit...";
   observer.Wait();
 }