cc: Remove unused proto conversion code.

cc/layers/solid_color_scrollbar_layer.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/solid_color_scrollbar_layer.h"
 
 #include <memory>
 
 #include "cc/layers/layer_impl.h"
 #include "cc/layers/solid_color_scrollbar_layer_impl.h"
@@ skipping 68 matching lines @@
       solid_color_scrollbar_layer_inputs_.scroll_layer_id);
   scrollbar->set_thumb_thickness(
       solid_color_scrollbar_layer_inputs_.thumb_thickness);
   scrollbar->set_track_start(solid_color_scrollbar_layer_inputs_.track_start);
   scrollbar->set_is_left_side_vertical_scrollbar(
       solid_color_scrollbar_layer_inputs_.is_left_side_vertical_scrollbar);
   scrollbar->set_orientation(ScrollbarOrientationToProto(
       solid_color_scrollbar_layer_inputs_.orientation));
 }
 
-void SolidColorScrollbarLayer::FromLayerNodeProto(
-    const proto::LayerNode& proto,
-    const LayerIdMap& layer_map,
-    LayerTreeHost* layer_tree_host) {
-  Layer::FromLayerNodeProto(proto, layer_map, layer_tree_host);
-
-  const proto::SolidColorScrollbarLayerProperties& scrollbar =
-      proto.solid_scrollbar();
-  solid_color_scrollbar_layer_inputs_.scroll_layer_id =
-      scrollbar.scroll_layer_id();
-  solid_color_scrollbar_layer_inputs_.thumb_thickness =
-      scrollbar.thumb_thickness();
-  solid_color_scrollbar_layer_inputs_.track_start = scrollbar.track_start();
-  solid_color_scrollbar_layer_inputs_.is_left_side_vertical_scrollbar =
-      scrollbar.is_left_side_vertical_scrollbar();
-  solid_color_scrollbar_layer_inputs_.orientation =
-      ScrollbarOrientationFromProto(scrollbar.orientation());
-}
-
 void SolidColorScrollbarLayer::SetOpacity(float opacity) {
   // The opacity of a solid color scrollbar layer is always 0 on main thread.
   DCHECK_EQ(opacity, 0.f);
   Layer::SetOpacity(opacity);
 }
 
 void SolidColorScrollbarLayer::PushPropertiesTo(LayerImpl* layer) {
   Layer::PushPropertiesTo(layer);
   SolidColorScrollbarLayerImpl* scrollbar_layer =
       static_cast<SolidColorScrollbarLayerImpl*>(layer);
@@ skipping 29 matching lines @@
 ScrollbarOrientation SolidColorScrollbarLayer::orientation() const {
   return solid_color_scrollbar_layer_inputs_.orientation;
 }
 
 void SolidColorScrollbarLayer::SetTypeForProtoSerialization(
     proto::LayerNode* proto) const {
   proto->set_type(proto::LayerNode::SOLID_COLOR_SCROLLBAR_LAYER);
 }
 
 }  // namespace cc