Tracing for NavigationHandle lifetime and state.

content/browser/frame_host/navigation_handle_impl_browsertest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/memory/weak_ptr.h"
 #include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/browser_side_navigation_policy.h"
@@ skipping 121 matching lines @@
       base::Closure did_call_will_process)
       : NavigationThrottle(handle),
         will_start_result_(will_start_result),
         will_redirect_result_(will_redirect_result),
         will_process_result_(will_process_result),
         did_call_will_start_(did_call_will_start),
         did_call_will_redirect_(did_call_will_redirect),
         did_call_will_process_(did_call_will_process) {}
   ~TestNavigationThrottle() override {}
 
+  const char* GetNameForLogging() override { return "TestNavigationThrottle"; }
+
   void Resume() { navigation_handle()->Resume(); }
 
   RequestContextType request_context_type() { return request_context_type_; }
 
  private:
   // NavigationThrottle implementation.
   NavigationThrottle::ThrottleCheckResult WillStartRequest() override {
     NavigationHandleImpl* navigation_handle_impl =
         static_cast<NavigationHandleImpl*>(navigation_handle());
     CHECK_NE(REQUEST_CONTEXT_TYPE_UNSPECIFIED,
@@ skipping 1060 matching lines @@
     NavigationHandleObserver observer(shell()->web_contents(), error_url);
     EXPECT_FALSE(NavigateToURL(shell(), error_url));
     EXPECT_TRUE(observer.has_committed());
     EXPECT_TRUE(observer.is_error());
     EXPECT_NE(site_instance,
               shell()->web_contents()->GetMainFrame()->GetSiteInstance());
   }
 }
 
 }  // namespace content