[presubmit] Enabling readability/inheritance linter checking.

src/libplatform/default-platform.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
 #define V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
 
 #include <functional>
 #include <map>
 #include <queue>
@@ skipping 16 matching lines @@
   DefaultPlatform();
   virtual ~DefaultPlatform();
 
   void SetThreadPoolSize(int thread_pool_size);
 
   void EnsureInitialized();
 
   bool PumpMessageLoop(v8::Isolate* isolate);
 
   // v8::Platform implementation.
-  virtual void CallOnBackgroundThread(
-      Task* task, ExpectedRuntime expected_runtime) override;
-  virtual void CallOnForegroundThread(v8::Isolate* isolate,
-                                      Task* task) override;
-  virtual void CallDelayedOnForegroundThread(Isolate* isolate, Task* task,
-                                             double delay_in_seconds) override;
-  virtual void CallIdleOnForegroundThread(Isolate* isolate,
-                                          IdleTask* task) override;
-  virtual bool IdleTasksEnabled(Isolate* isolate) override;
+  void CallOnBackgroundThread(Task* task,
+                              ExpectedRuntime expected_runtime) override;
+  void CallOnForegroundThread(v8::Isolate* isolate, Task* task) override;
+  void CallDelayedOnForegroundThread(Isolate* isolate, Task* task,
+                                     double delay_in_seconds) override;
+  void CallIdleOnForegroundThread(Isolate* isolate, IdleTask* task) override;
+  bool IdleTasksEnabled(Isolate* isolate) override;
   double MonotonicallyIncreasingTime() override;
 
  private:
   static const int kMaxThreadPoolSize;
 
   Task* PopTaskInMainThreadQueue(v8::Isolate* isolate);
   Task* PopTaskInMainThreadDelayedQueue(v8::Isolate* isolate);
 
   base::Mutex lock_;
   bool initialized_;
@@ skipping 10 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(DefaultPlatform);
 };
 
 
 }  // namespace platform
 }  // namespace v8
 
 
 #endif  // V8_LIBPLATFORM_DEFAULT_PLATFORM_H_