Remove call to GetBlockingPool in RLZ

chrome/browser/rlz/chrome_rlz_tracker_delegate_unittest.cc

Index: chrome/browser/rlz/chrome_rlz_tracker_delegate_unittest.cc
diff --git a/chrome/browser/rlz/chrome_rlz_tracker_delegate_unittest.cc b/chrome/browser/rlz/chrome_rlz_tracker_delegate_unittest.cc
index 2d76c92a2ed1409469f3e04787a3a1cb2dc660d9..f4e2b92982cc00a6465e694befba0268fd7066ed 100644
--- a/chrome/browser/rlz/chrome_rlz_tracker_delegate_unittest.cc
+++ b/chrome/browser/rlz/chrome_rlz_tracker_delegate_unittest.cc
@@ -6,6 +6,7 @@
 
 #include <memory>
 
+#include "base/test/scoped_task_environment.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
@@ -29,6 +30,7 @@ class ChromeRLZTrackerDelegateTest : public testing::Test {
   }
 
  private:
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
   std::unique_ptr<ChromeRLZTrackerDelegate> delegate_;
 };