Fix bug number typo in comment.

chrome/browser/task_manager/task_manager_browsertest.cc

Index: chrome/browser/task_manager/task_manager_browsertest.cc
diff --git a/chrome/browser/task_manager/task_manager_browsertest.cc b/chrome/browser/task_manager/task_manager_browsertest.cc
index 2cd1796a4e096271e3f6b03c9d813e0b1f15656e..76a3b1112f824c14453534b986f82e5641f8a3a5 100644
--- a/chrome/browser/task_manager/task_manager_browsertest.cc
+++ b/chrome/browser/task_manager/task_manager_browsertest.cc
@@ -207,7 +207,7 @@ IN_PROC_BROWSER_TEST_F(TaskManagerBrowserTest, KillTab) {
   ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows(2, MatchAnyTab()));
 }
 
-// Test for http://crbug.com/444722, which is not fixed yet.
+// Test for http://crbug.com/444945, which is not fixed yet.
 IN_PROC_BROWSER_TEST_F(TaskManagerBrowserTest,
                        DISABLED_NavigateAwayFromHungRenderer) {
   host_resolver()->AddRule("*", "127.0.0.1");