cc: Remove cc::Thread and cc::ThreadImpl.

cc/scheduler/rate_limiter.h

Index: cc/scheduler/rate_limiter.h
diff --git a/cc/scheduler/rate_limiter.h b/cc/scheduler/rate_limiter.h
index 0d2de38ebfcc251a6246e3ad4e6ae678379edaae..04b90772e36f777d86d3e61b5585a1d00a6ca7bf 100644
--- a/cc/scheduler/rate_limiter.h
+++ b/cc/scheduler/rate_limiter.h
@@ -7,12 +7,12 @@
 
 #include "base/memory/ref_counted.h"
 
+namespace base { class SingleThreadTaskRunner; }
+
 namespace WebKit { class WebGraphicsContext3D; }
 
 namespace cc {
 
-class Thread;
-
 class RateLimiterClient {
  public:
   virtual void RateLimit() = 0;
@@ -31,7 +31,7 @@ class RateLimiter : public base::RefCounted<RateLimiter> {
   static scoped_refptr<RateLimiter> Create(
       WebKit::WebGraphicsContext3D* context,
       RateLimiterClient* client,
-      Thread* thread);
+      base::SingleThreadTaskRunner* task_runner);
 
   void Start();
 
@@ -43,7 +43,7 @@ class RateLimiter : public base::RefCounted<RateLimiter> {
 
   RateLimiter(WebKit::WebGraphicsContext3D* context,
               RateLimiterClient* client,
-              Thread* thread);
+              base::SingleThreadTaskRunner* task_runner);
   ~RateLimiter();
 
   void RateLimitContext();
@@ -51,7 +51,7 @@ class RateLimiter : public base::RefCounted<RateLimiter> {
   WebKit::WebGraphicsContext3D* context_;
   bool active_;
   RateLimiterClient* client_;
-  Thread* thread_;
+  base::SingleThreadTaskRunner* task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(RateLimiter);
 };