Remove the old task manager view

chrome/browser/task_manager/task_manager_browsertest_util.h

Index: chrome/browser/task_manager/task_manager_browsertest_util.h
diff --git a/chrome/browser/task_manager/task_manager_browsertest_util.h b/chrome/browser/task_manager/task_manager_browsertest_util.h
index 7f9902a164b3b9993c22194cb9d9fff32df62b1c..d71e1a1ddcda5c6ec3f61bf373bf6e19e5600d82 100644
--- a/chrome/browser/task_manager/task_manager_browsertest_util.h
+++ b/chrome/browser/task_manager/task_manager_browsertest_util.h
@@ -12,10 +12,6 @@
 namespace task_manager {
 namespace browsertest_util {
 
-// For the old task manager browser tests, we must call this to disable the
-// use of the new implementation and revert back to the old one.
-void EnableOldTaskManager();
-
 // Runs the message loop, observing the task manager, until there are exactly
 // |resource_count| many resources whose titles match the pattern
 // |title_pattern|. The match is done via string_util's base::MatchPattern, so