cc: Remove cheapness estimator usage from tile manager.

cc/resources/tile_manager.h

Index: cc/resources/tile_manager.h
diff --git a/cc/resources/tile_manager.h b/cc/resources/tile_manager.h
index 944b54de5e9f11f5b1b7c5248a5f5efae2fe4d81..5ced837e6ca3ff666d53fc18e7b78cebbc474883 100644
--- a/cc/resources/tile_manager.h
+++ b/cc/resources/tile_manager.h
@@ -65,7 +65,6 @@ class CC_EXPORT TileManager : public WorkerPoolClient {
   TileManager(TileManagerClient* client,
               ResourceProvider *resource_provider,
               size_t num_raster_threads,
-              bool use_cheapess_estimator,
               bool use_color_estimator,
               bool prediction_benchmarking,
               RenderingStatsInstrumentation* rendering_stats_instrumentation);
@@ -131,7 +130,6 @@ class CC_EXPORT TileManager : public WorkerPoolClient {
     client_->ScheduleManageTiles();
     manage_tiles_pending_ = true;
   }
-  void UpdateCheapTasksTimeLimit();
   void AnalyzeTile(Tile* tile);
   void GatherPixelRefsForTile(Tile* tile);
   void DispatchImageDecodeTasksForTile(Tile* tile);
@@ -164,8 +162,6 @@ class CC_EXPORT TileManager : public WorkerPoolClient {
       skia::LazyPixelRef* pixel_ref,
       RenderingStatsInstrumentation* stats_instrumentation);
 
-  static void RecordCheapnessPredictorResults(bool is_predicted_cheap,
-                                              bool is_actually_cheap);
   static void RecordSolidColorPredictorResults(const SkColor* actual_colors,
                                                size_t color_count,
                                                bool is_predicted_solid,
@@ -198,7 +194,6 @@ class CC_EXPORT TileManager : public WorkerPoolClient {
 
   RenderingStatsInstrumentation* rendering_stats_instrumentation_;
 
-  bool use_cheapness_estimator_;
   bool use_color_estimator_;
   bool prediction_benchmarking_;
   bool did_initialize_visible_tile_;