Update from chromium https://crrev.com/301725/

cc/resources/raster_worker_pool.h

Index: cc/resources/raster_worker_pool.h
diff --git a/cc/resources/raster_worker_pool.h b/cc/resources/raster_worker_pool.h
index d3c2e359e80a84f32d2142089e0f1a5974774044..30d26e554cd2f9091b6ef34fbb7237ce9a27f933 100644
--- a/cc/resources/raster_worker_pool.h
+++ b/cc/resources/raster_worker_pool.h
@@ -14,7 +14,7 @@ class SequencedTaskRunner;
 }
 
 namespace cc {
-class PicturePileImpl;
+class RasterSource;
 class RenderingStatsInstrumentation;
 
 class CC_EXPORT RasterWorkerPool {
@@ -70,7 +70,7 @@ class CC_EXPORT RasterWorkerPool {
                                ResourceFormat format,
                                const gfx::Size& size,
                                int stride,
-                               const PicturePileImpl* picture_pile,
+                               const RasterSource* raster_source,
                                const gfx::Rect& rect,
                                float scale,
                                RenderingStatsInstrumentation* stats);