cc: Remove cheapness estimator usage from tile manager.

cc/resources/raster_worker_pool.cc

Index: cc/resources/raster_worker_pool.cc
diff --git a/cc/resources/raster_worker_pool.cc b/cc/resources/raster_worker_pool.cc
index c2a4a0b87a17232c159b34f148bcf1d37fcbdc15..0cb913d4e91ecf4447cc3fd164d50fc6595e8970 100644
--- a/cc/resources/raster_worker_pool.cc
+++ b/cc/resources/raster_worker_pool.cc
@@ -13,29 +13,20 @@ namespace {
 class RasterWorkerPoolTaskImpl : public internal::WorkerPoolTask {
  public:
   RasterWorkerPoolTaskImpl(PicturePileImpl* picture_pile,
-                           bool is_cheap,
                            const RasterWorkerPool::RasterCallback& task,
                            const base::Closure& reply)
       : internal::WorkerPoolTask(reply),
         picture_pile_(picture_pile),
-        is_cheap_(is_cheap),
         task_(task) {
     DCHECK(picture_pile_);
   }
 
-  virtual bool IsCheap() OVERRIDE { return is_cheap_; }
-
-  virtual void Run() OVERRIDE {
-    task_.Run(picture_pile_.get());
-  }
-
   virtual void RunOnThread(unsigned thread_index) OVERRIDE {
     task_.Run(picture_pile_->GetCloneForDrawingOnThread(thread_index));
   }
 
  private:
   scoped_refptr<PicturePileImpl> picture_pile_;
-  bool is_cheap_;
   RasterWorkerPool::RasterCallback task_;
 };
 
@@ -57,12 +48,10 @@ RasterWorkerPool::~RasterWorkerPool() {
 }
 
 void RasterWorkerPool::PostRasterTaskAndReply(PicturePileImpl* picture_pile,
-                                              bool is_cheap,
                                               const RasterCallback& task,
                                               const base::Closure& reply) {
   PostTask(make_scoped_ptr(new RasterWorkerPoolTaskImpl(
                                picture_pile,
-                               is_cheap,
                                task,
                                reply)).PassAs<internal::WorkerPoolTask>());
 }