[presubmit] Enabling readability/inheritance linter checking.

test/unittests/base/platform/condition-variable-unittest.cc

Index: test/unittests/base/platform/condition-variable-unittest.cc
diff --git a/test/unittests/base/platform/condition-variable-unittest.cc b/test/unittests/base/platform/condition-variable-unittest.cc
index 26168d0223071d46fdf007f7c49e5b4a3a3a75b3..43fd33527092c8e8b197a7fb8dbe32568552947f 100644
--- a/test/unittests/base/platform/condition-variable-unittest.cc
+++ b/test/unittests/base/platform/condition-variable-unittest.cc
@@ -35,9 +35,8 @@ class ThreadWithMutexAndConditionVariable final : public Thread {
       : Thread(Options("ThreadWithMutexAndConditionVariable")),
         running_(false),
         finished_(false) {}
-  virtual ~ThreadWithMutexAndConditionVariable() {}
 
-  virtual void Run() override {
+  void Run() override {
     LockGuard<Mutex> lock_guard(&mutex_);
     running_ = true;
     cv_.NotifyOne();
@@ -116,9 +115,8 @@ class ThreadWithSharedMutexAndConditionVariable final : public Thread {
         finished_(false),
         cv_(NULL),
         mutex_(NULL) {}
-  virtual ~ThreadWithSharedMutexAndConditionVariable() {}
 
-  virtual void Run() override {
+  void Run() override {
     LockGuard<Mutex> lock_guard(mutex_);
     running_ = true;
     cv_->NotifyAll();
@@ -233,7 +231,7 @@ class LoopIncrementThread final : public Thread {
     EXPECT_EQ(0, limit % thread_count);
   }
 
-  virtual void Run() override {
+  void Run() override {
     int last_count = -1;
     while (true) {
       LockGuard<Mutex> lock_guard(mutex_);