Add a way to cancel deferred navigations in NavigationHandle

components/navigation_interception/intercept_navigation_throttle_unittest.cc

Index: components/navigation_interception/intercept_navigation_throttle_unittest.cc
diff --git a/components/navigation_interception/intercept_navigation_throttle_unittest.cc b/components/navigation_interception/intercept_navigation_throttle_unittest.cc
index 7c95a531a7e26c928346dc2c73e2f97c7a3129d2..8c15876c8ce1dbee4c0aa6891ca2f17f390cc090 100644
--- a/components/navigation_interception/intercept_navigation_throttle_unittest.cc
+++ b/components/navigation_interception/intercept_navigation_throttle_unittest.cc
@@ -67,7 +67,8 @@ class InterceptNavigationThrottleTest
                 test_handle.get(),
                 base::Bind(
                     &MockInterceptCallbackReceiver::ShouldIgnoreNavigation,
-                    base::Unretained(mock_callback_receiver_.get()))))
+                    base::Unretained(mock_callback_receiver_.get())),
+                true))
             .Pass());
     return test_handle->CallWillStartRequestForTesting(
         is_post, content::Referrer(), false, ui::PAGE_TRANSITION_LINK, false);
@@ -83,7 +84,8 @@ class InterceptNavigationThrottleTest
                 test_handle.get(),
                 base::Bind(
                     &MockInterceptCallbackReceiver::ShouldIgnoreNavigation,
-                    base::Unretained(mock_callback_receiver_.get()))))
+                    base::Unretained(mock_callback_receiver_.get())),
+                true))
             .Pass());
     test_handle->CallWillStartRequestForTesting(
         true, content::Referrer(), false, ui::PAGE_TRANSITION_LINK, false);