A speculative Revert for r165872 - Remove static thread pointers from CC, attempt 2

cc/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_RATE_LIMITER_H_
 #define CC_RATE_LIMITER_H_
 
 #include "base/memory/ref_counted.h"
 
 namespace WebKit {
 class WebGraphicsContext3D;
 }
 
 namespace cc {
 
-class Thread;
-
 class RateLimiterClient {
 public:
     virtual void rateLimit() = 0;
 };
 
 // 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(WebKit::WebGraphicsContext3D*, RateLimiterClient*, Thread*);
+    static scoped_refptr<RateLimiter> create(WebKit::WebGraphicsContext3D*, RateLimiterClient*);
 
     void start();
 
     // Context and client will not be accessed after stop().
     void stop();
 
 private:
-    RateLimiter(WebKit::WebGraphicsContext3D*, RateLimiterClient*, Thread*);
+    RateLimiter(WebKit::WebGraphicsContext3D*, RateLimiterClient*);
     ~RateLimiter();
     friend class base::RefCounted<RateLimiter>;
 
     class Task;
     friend class Task;
     void rateLimitContext();
 
     WebKit::WebGraphicsContext3D* m_context;
     bool m_active;
     RateLimiterClient *m_client;
-    Thread* m_thread;
 };
 
 }
 #endif  // CC_RATE_LIMITER_H_