Tracing for NavigationHandle lifetime and state.

components/subresource_filter/content/browser/content_subresource_filter_throttle_manager_unittest.cc

 // Copyright 2017 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 "components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/logging.h"
@@ skipping 55 matching lines @@
 
   // content::NavigationThrottle:
   content::NavigationThrottle::ThrottleCheckResult WillStartRequest() override {
     return MaybeNotifyActivation(WILL_START_REQUEST);
   }
 
   content::NavigationThrottle::ThrottleCheckResult WillProcessResponse()
       override {
     return MaybeNotifyActivation(WILL_PROCESS_RESPONSE);
   }
+  const char* GetNameForLogging() override {
+    return "MockPageStateActivationThrottle";
+  }
 
  private:
   content::NavigationThrottle::ThrottleCheckResult MaybeNotifyActivation(
       PageActivationNotificationTiming throttle_state) {
     if (throttle_state == activation_throttle_state_) {
       auto it = mock_page_activations_.find(navigation_handle()->GetURL());
       if (it != mock_page_activations_.end()) {
         throttle_manager_->NotifyPageActivationComputed(navigation_handle(),
                                                         it->second);
       }
@@ skipping 605 matching lines @@
   EXPECT_EQ(0, disallowed_notification_count());
   EXPECT_EQ(1, attempted_frame_activations());
 }
 
 // TODO(csharrison): Make sure the following conditions are exercised in tests:
 //
 // - Synchronous navigations to about:blank. These hit issues with the
 //   NavigationSimulator currently.
 
 }  // namespace subresource_filter