Delete preferred raster bounds code.

cc/blink/web_layer_impl.cc

Index: cc/blink/web_layer_impl.cc
diff --git a/cc/blink/web_layer_impl.cc b/cc/blink/web_layer_impl.cc
index 43d7caa7f202b524f31c1b004f3600d19d70183b..ff07c7c0b1fdd073f0fb9588bd2f7fdfdcdacdef 100644
--- a/cc/blink/web_layer_impl.cc
+++ b/cc/blink/web_layer_impl.cc
@@ -475,12 +475,4 @@ void WebLayerImpl::setHasWillChangeTransformHint(bool has_will_change) {
   layer_->SetHasWillChangeTransformHint(has_will_change);
 }
 
-void WebLayerImpl::setPreferredRasterBounds(const WebSize& bounds) {
-  layer_->SetPreferredRasterBounds(bounds);
-}
-
-void WebLayerImpl::clearPreferredRasterBounds() {
-  layer_->ClearPreferredRasterBounds();
-}
-
 }  // namespace cc_blink