Fix and re-enable NoScriptAccessAfterSwapOut test.

content/browser/frame_host/render_frame_host_manager_browsertest.cc

Index: content/browser/frame_host/render_frame_host_manager_browsertest.cc
diff --git a/content/browser/frame_host/render_frame_host_manager_browsertest.cc b/content/browser/frame_host/render_frame_host_manager_browsertest.cc
index 77d3813c5795c27d81fdee81bdc818fa3225bdb3..4077d0b291b52b392b160a0b9b008e1db118d262 100644
--- a/content/browser/frame_host/render_frame_host_manager_browsertest.cc
+++ b/content/browser/frame_host/render_frame_host_manager_browsertest.cc
@@ -50,8 +50,7 @@ class RenderFrameHostManagerTest : public ContentBrowserTest {
 };
 
 // Web pages should not have script access to the swapped out page.
-IN_PROC_BROWSER_TEST_F(RenderFrameHostManagerTest,
-                       DISABLED_NoScriptAccessAfterSwapOut) {
+IN_PROC_BROWSER_TEST_F(RenderFrameHostManagerTest, NoScriptAccessAfterSwapOut) {
   // Start two servers with different sites.
   ASSERT_TRUE(test_server()->Start());
   net::SpawnedTestServer https_server(