[presubmit] Enabling readability/inheritance linter checking.

test/unittests/libplatform/task-queue-unittest.cc

Index: test/unittests/libplatform/task-queue-unittest.cc
diff --git a/test/unittests/libplatform/task-queue-unittest.cc b/test/unittests/libplatform/task-queue-unittest.cc
index d6ddaa3b7e166c93cb1e0c93e027a44108d71fd8..2de104b9c03a40dc8c62f151aa79e033183b6479 100644
--- a/test/unittests/libplatform/task-queue-unittest.cc
+++ b/test/unittests/libplatform/task-queue-unittest.cc
@@ -26,7 +26,7 @@ class TaskQueueThread final : public base::Thread {
   explicit TaskQueueThread(TaskQueue* queue)
       : Thread(Options("libplatform TaskQueueThread")), queue_(queue) {}
 
-  virtual void Run() override { EXPECT_THAT(queue_->GetNext(), IsNull()); }
+  void Run() override { EXPECT_THAT(queue_->GetNext(), IsNull()); }
 
  private:
   TaskQueue* queue_;