Revert of Keep track in the browser of which frames have onunload and onbeforeunload handlers.

content/browser/frame_host/navigator_impl_unittest.cc

Index: content/browser/frame_host/navigator_impl_unittest.cc
diff --git a/content/browser/frame_host/navigator_impl_unittest.cc b/content/browser/frame_host/navigator_impl_unittest.cc
index dd68bf558ed86384c43a5b4c7fa0a1865c96a8a5..0d2f9b0f29c1790237b866dece5c8c94d5dc91f7 100644
--- a/content/browser/frame_host/navigator_impl_unittest.cc
+++ b/content/browser/frame_host/navigator_impl_unittest.cc
@@ -269,7 +269,6 @@
   const GURL kUrl2("http://www.chromium.org/");
 
   contents()->NavigateAndCommit(kUrl1);
-  main_test_rfh()->set_has_beforeunload_handlers();
 
   // Start a new navigation.
   FrameTreeNode* node = main_test_rfh()->frame_tree_node();
@@ -308,8 +307,14 @@
   RequestNavigation(subframe_node, kUrl2);
   NavigationRequest* subframe_request = subframe_node->navigation_request();
 
+  // We should be waiting for the BeforeUnload event to execute in the subframe.
   ASSERT_TRUE(subframe_request);
-
+  EXPECT_EQ(NavigationRequest::WAITING_FOR_RENDERER_RESPONSE,
+            subframe_request->state());
+  EXPECT_TRUE(subframe_rfh->is_waiting_for_beforeunload_ack());
+
+  // Simulate the BeforeUnload ACK. The navigation should start.
+  subframe_rfh->SendBeforeUnloadACK(true);
   TestNavigationURLLoader* subframe_loader =
       GetLoaderForNavigationRequest(subframe_request);
   ASSERT_TRUE(subframe_loader);
@@ -336,11 +341,15 @@
   RequestNavigation(root_node, kUrl3);
   NavigationRequest* main_request = root_node->navigation_request();
   ASSERT_TRUE(main_request);
+  EXPECT_EQ(NavigationRequest::WAITING_FOR_RENDERER_RESPONSE,
+            main_request->state());
 
   // Main frame navigation to a different site should use a speculative
   // RenderFrameHost.
   EXPECT_TRUE(GetSpeculativeRenderFrameHost(root_node));
 
+  // Simulate a BeforeUnloadACK IPC on the main frame.
+  main_test_rfh()->SendBeforeUnloadACK(true);
   TestNavigationURLLoader* main_loader =
       GetLoaderForNavigationRequest(main_request);
   EXPECT_EQ(kUrl3, main_request->common_params().url);