Add support for (de)serializing LayerSelection.

cc/input/layer_selection_bound.cc

 // Copyright 2014 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 "base/logging.h"
 #include "cc/input/layer_selection_bound.h"
 #include "cc/proto/gfx_conversions.h"
 #include "cc/proto/layer_selection_bound.pb.h"
 
 namespace cc {
@@ skipping 59 matching lines @@
 }
 
 void LayerSelectionBound::FromProtobuf(
     const proto::LayerSelectionBound& proto) {
   type = SelectionBoundTypeFromProtobuf(proto.type());
   edge_top = ProtoToPoint(proto.edge_top());
   edge_bottom = ProtoToPoint(proto.edge_bottom());
   layer_id = proto.layer_id();
 }
 
+void LayerSelectionToProtobuf(const LayerSelection& selection,
+                              proto::LayerSelection* proto) {
+  selection.start.ToProtobuf(proto->mutable_start());
+  selection.end.ToProtobuf(proto->mutable_end());
+  proto->set_is_editable(selection.is_editable);
+  proto->set_is_empty_text_form_control(selection.is_empty_text_form_control);
+}
+
+void LayerSelectionFromProtobuf(LayerSelection* selection,
+                                const proto::LayerSelection& proto) {
+  selection->start.FromProtobuf(proto.start());
+  selection->end.FromProtobuf(proto.end());
+  selection->is_editable = proto.is_editable();
+  selection->is_empty_text_form_control = proto.is_empty_text_form_control();
+}
+
 }  // namespace cc