Added material design mouse hover feedback support.

ui/views/animation/ink_drop_painted_layer_delegates.cc

Index: ui/views/animation/ink_drop_painted_layer_delegates.cc
diff --git a/ui/views/animation/ink_drop_painted_layer_delegates.cc b/ui/views/animation/ink_drop_painted_layer_delegates.cc
index bdb79460e4964608ee017d113e685e212c9c0585..d5f610aa0ec8f3781f84755a7242051f0faa0306 100644
--- a/ui/views/animation/ink_drop_painted_layer_delegates.cc
+++ b/ui/views/animation/ink_drop_painted_layer_delegates.cc
@@ -82,4 +82,34 @@ void RectangleLayerDelegate::OnPaintLayer(const ui::PaintContext& context) {
   canvas->DrawRect(gfx::Rect(size_), paint);
 }
 
+////////////////////////////////////////////////////////////////////////////////
+//
+// RoundedRectangleLayerDelegate
+//
+
+RoundedRectangleLayerDelegate::RoundedRectangleLayerDelegate(SkColor color,
+                                                             gfx::Size size,
+                                                             int corner_radius)
+    : BasePaintedLayerDelegate(color),
+      size_(size),
+      corner_radius_(corner_radius) {}
+
+RoundedRectangleLayerDelegate::~RoundedRectangleLayerDelegate() {}
+
+gfx::PointF RoundedRectangleLayerDelegate::GetCenterPoint() const {
+  return gfx::PointF(size_.width() / 2.0f, size_.height() / 2.0f);

[varkha, 2016/01/22 15:45:32]

Could use gfx::Rect(size_)::CenterPoint().

[bruthig, 2016/01/25 22:39:17]

Done.

+}
+
+void RoundedRectangleLayerDelegate::OnPaintLayer(
+    const ui::PaintContext& context) {
+  SkPaint paint;
+  paint.setColor(color());
+  paint.setFlags(SkPaint::kAntiAlias_Flag);
+  paint.setStyle(SkPaint::kFill_Style);
+
+  ui::PaintRecorder recorder(context, size_);
+  gfx::Canvas* canvas = recorder.canvas();
+  canvas->DrawRoundRect(gfx::Rect(size_), corner_radius_, paint);
+}
+
 }  // namespace views