1 files changed, 27 insertions, 0 deletions
diff --git a/chromium/ui/views/animation/ink_drop_util.h b/chromium/ui/views/animation/ink_drop_util.h
new file mode 100644
index 00000000000..883b78974ef
--- /dev/null
+++ b/chromium/ui/views/animation/ink_drop_util.h
@@ -0,0 +1,27 @@
+// Copyright 2017 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.
+
+#ifndef UI_VIEWS_ANIMATION_INK_DROP_UTIL_H_
+#define UI_VIEWS_ANIMATION_INK_DROP_UTIL_H_
+
+#include "ui/views/views_export.h"
+
+namespace gfx {
+class Transform;
+}  // namespace gfx
+
+namespace views {
+
+// A layer |transform| may add an offset to its layer relative to the parent
+// layer. This offset does not take into consideration the subpixel positioning.
+// A subpixel correction needs to be applied to make sure the layers are pixel
+// aligned after the transform is applied. Use this function to compute the
+// subpixel correction transform.
+VIEWS_EXPORT gfx::Transform GetTransformSubpixelCorrection(
+    const gfx::Transform& transform,
+    float device_scale_factor);
+
+}  // namespace views
+
+#endif  // UI_VIEWS_ANIMATION_INK_DROP_UTIL_H_