Tracing for NavigationHandle lifetime and state.

content/browser/frame_host/navigation_handle_impl_unittest.cc

Index: content/browser/frame_host/navigation_handle_impl_unittest.cc
diff --git a/content/browser/frame_host/navigation_handle_impl_unittest.cc b/content/browser/frame_host/navigation_handle_impl_unittest.cc
index 05e433d65ecfd6cf59db32460a2cdc0feaa204fb..60669a10d9e6996e414381d620c22e772953aa66 100644
--- a/content/browser/frame_host/navigation_handle_impl_unittest.cc
+++ b/content/browser/frame_host/navigation_handle_impl_unittest.cc
@@ -43,6 +43,8 @@ class TestNavigationThrottle : public NavigationThrottle {
     return result_;
   }
 
+  const char* GetNameForLogging() override { return "TestNavigationThrottle"; }
+
   int will_start_calls() const { return will_start_calls_; }
   int will_redirect_calls() const { return will_redirect_calls_; }
   int will_process_response_calls() const {