Disable navigations in the unload handler.

third_party/WebKit/Source/core/loader/FrameLoader.cpp

Index: third_party/WebKit/Source/core/loader/FrameLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/FrameLoader.cpp b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
index 0eb7138c45286ea4e9666d26bf2644b00a2aa9fc..3cdf16253289e47b10e578a534d6adf17aacb37b 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
@@ -274,7 +274,7 @@ void FrameLoader::saveScrollState()
 
 void FrameLoader::dispatchUnloadEvent()
 {
-    NavigationCounterForUnload counter;
+    NavigationDisablerForUnload navigationDisabler;
 
     // If the frame is unloading, the provisional loader should no longer be
     // protected. It will be detached soon.
@@ -1351,7 +1351,7 @@ bool FrameLoader::shouldClose(bool isReload)
 
     bool shouldClose = false;
     {
-        NavigationDisablerForBeforeUnload navigationDisabler;
+        NavigationDisablerForUnload navigationDisabler;
         size_t i;
 
         bool didAllowNavigation = false;