Fix cpplint errors in cc/(animation|input|layers|trees|test)/

cc/scheduler/rate_limiter.h

 // Copyright 2011 The Chromium 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 CC_SCHEDULER_RATE_LIMITER_H_
 #define CC_SCHEDULER_RATE_LIMITER_H_
 
 #include "base/memory/ref_counted.h"
 
 namespace WebKit { class WebGraphicsContext3D; }
 
 namespace cc {
 
 class Thread;
 
 class RateLimiterClient {
  public:
   virtual void RateLimit() = 0;
+
+ protected:
+  virtual ~RateLimiterClient() {}
 };
 
 // A RateLimiter can be used to make sure that a single context does not
 // dominate all execution time.  To use, construct a RateLimiter class around
 // the context and call Start() whenever calls are made on the context outside
 // of normal flow control. RateLimiter will block if the context is too far
 // ahead of the compositor.
 class RateLimiter : public base::RefCounted<RateLimiter> {
  public:
   static scoped_refptr<RateLimiter> Create(
@@ skipping 17 matching lines @@
   void RateLimitContext();
 
   WebKit::WebGraphicsContext3D* context_;
   bool active_;
   RateLimiterClient* client_;
   Thread* thread_;
 
   DISALLOW_COPY_AND_ASSIGN(RateLimiter);
 };
 
-}
+}  // namespace cc
+
 #endif  // CC_SCHEDULER_RATE_LIMITER_H_