Remove obsolete SkRecord preview code.

cc/layers/picture_layer.cc

Index: cc/layers/picture_layer.cc
diff --git a/cc/layers/picture_layer.cc b/cc/layers/picture_layer.cc
index 7573471793aee200a35a853b880d15f5aa29b129..aee140f85294c96d6d414c9a1f253ea7be9a79a3 100644
--- a/cc/layers/picture_layer.cc
+++ b/cc/layers/picture_layer.cc
@@ -129,7 +129,7 @@ bool PictureLayer::Update(ResourceUpdateQueue* queue,
                                          layer_size,
                                          visible_layer_rect,
                                          update_source_frame_number_,
-                                         RecordingMode(),
+                                         Picture::RECORD_NORMALLY,
                                          rendering_stats_instrumentation());
   last_updated_visible_content_rect_ = visible_content_rect();
 
@@ -148,17 +148,6 @@ void PictureLayer::SetIsMask(bool is_mask) {
   pile_->set_is_mask(is_mask);
 }
 
-Picture::RecordingMode PictureLayer::RecordingMode() const {
-  switch (layer_tree_host()->settings().recording_mode) {
-    case LayerTreeSettings::RecordNormally:
-      return Picture::RECORD_NORMALLY;
-    case LayerTreeSettings::RecordWithSkRecord:
-      return Picture::RECORD_WITH_SKRECORD;
-  }
-  NOTREACHED();
-  return Picture::RECORD_NORMALLY;
-}
-
 bool PictureLayer::SupportsLCDText() const {
   return true;
 }