Delete preferred raster bounds code.

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index 04fa7f4a4236956fa9657f1ed3ae28b0479c252c..c966f75f132a66ac259d56504e5e50b3ac9e336d 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -62,7 +62,6 @@ Layer::Inputs::Inputs(int layer_id)
       scroll_parent(nullptr),
       clip_parent(nullptr),
       has_will_change_transform_hint(false),
-      has_preferred_raster_bounds(false),
       hide_layer_and_subtree(false),
       client(nullptr) {}
 
@@ -1189,10 +1188,6 @@ void Layer::PushPropertiesTo(LayerImpl* layer) {
   layer->SetUpdateRect(inputs_.update_rect);
 
   layer->SetHasWillChangeTransformHint(has_will_change_transform_hint());
-  if (has_preferred_raster_bounds())
-    layer->SetPreferredRasterBounds(preferred_raster_bounds());
-  else
-    layer->ClearPreferredRasterBounds();
   layer->SetNeedsPushProperties();
 
   // Reset any state that should be cleared for the next update.
@@ -1426,24 +1421,6 @@ void Layer::SetHasWillChangeTransformHint(bool has_will_change) {
   SetNeedsCommit();
 }
 
-void Layer::SetPreferredRasterBounds(const gfx::Size& preferred_raster_bounds) {
-  if (inputs_.has_preferred_raster_bounds &&
-      inputs_.preferred_raster_bounds == preferred_raster_bounds)
-    return;
-
-  inputs_.has_preferred_raster_bounds = true;
-  inputs_.preferred_raster_bounds = preferred_raster_bounds;
-  SetNeedsCommit();
-}
-
-void Layer::ClearPreferredRasterBounds() {
-  if (!inputs_.has_preferred_raster_bounds)
-    return;
-  inputs_.has_preferred_raster_bounds = false;
-  inputs_.preferred_raster_bounds = gfx::Size();
-  SetNeedsCommit();
-}
-
 MutatorHost* Layer::GetMutatorHost() const {
   return layer_tree_host_ ? layer_tree_host_->mutator_host() : nullptr;
 }