Route selection bounds updates through WebLayerTreeView

Source/core/rendering/compositing/CompositedSelectionBound.h

Index: Source/core/rendering/compositing/CompositedSelectionBound.h
diff --git a/Source/core/svg/SVGAnimatedLengthList.h b/Source/core/rendering/compositing/CompositedSelectionBound.h
similarity index 77%
copy from Source/core/svg/SVGAnimatedLengthList.h
copy to Source/core/rendering/compositing/CompositedSelectionBound.h
index 9ac0eb565941e2a90efc30468c700c109953910f..9e05d7f3b89f81ad046d2df70c14542adecc8de1 100644
--- a/Source/core/svg/SVGAnimatedLengthList.h
+++ b/Source/core/rendering/compositing/CompositedSelectionBound.h
@@ -28,15 +28,31 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SVGAnimatedLengthList_h
-#define SVGAnimatedLengthList_h
+#ifndef CompositedSelectionBound_h
+#define CompositedSelectionBound_h
 
-#include "core/svg/SVGLengthListTearOff.h"
-#include "core/svg/properties/SVGAnimatedProperty.h"
+#include "platform/geometry/IntRect.h"
+#include "platform/graphics/GraphicsLayer.h"
 
-namespace blink {
+namespace WebCore {
 
-typedef SVGAnimatedProperty<SVGLengthList> SVGAnimatedLengthList;
+struct CompositedSelectionBound {
+    enum Type {
+        Caret,
+        SelectionLeft,
+        SelectionRight
+    };
+
+    CompositedSelectionBound()
+        : type(Caret)
+        , layer(nullptr)
+    {
+    }
+
+    Type type;
+    GraphicsLayer* layer;
+    IntRect edgeRectInLayer;
+};
 
 } // namespace blink