Update scoped_ptr references to be unique_ptr in src/base comments.

base/task_scheduler/sequence_unittest.cc

Index: base/task_scheduler/sequence_unittest.cc
diff --git a/base/task_scheduler/sequence_unittest.cc b/base/task_scheduler/sequence_unittest.cc
index ba020cb31c085aa3c3edd77045631b9acf27b884..c45d8a87d010054872e5861824f5e9911e92f15d 100644
--- a/base/task_scheduler/sequence_unittest.cc
+++ b/base/task_scheduler/sequence_unittest.cc
@@ -62,7 +62,7 @@ class TaskSchedulerSequenceTest : public testing::Test {
   std::unique_ptr<Task> task_e_owned_;
 
   // Raw pointers to those same tasks for verification. This is needed because
-  // the scoped_ptrs above no longer point to the tasks once they have been
+  // the unique_ptrs above no longer point to the tasks once they have been
   // moved into a Sequence.
   const Task* task_a_;
   const Task* task_b_;