ui: Remove implicit flooring in skia rect conversion methods.

ui/gfx/rect_conversions.h

Index: ui/gfx/rect_conversions.h
diff --git a/ui/gfx/rect_conversions.h b/ui/gfx/rect_conversions.h
index c8170cce0acdad9f9671dde7e295ebc907ebf9f0..7c971b3eaa12002d17b42ced90439315c63509b8 100644
--- a/ui/gfx/rect_conversions.h
+++ b/ui/gfx/rect_conversions.h
@@ -16,6 +16,12 @@ UI_EXPORT Rect ToEnclosingRect(const RectF& rect);
 // Returns the largest Rect that is enclosed by the given RectF.
 UI_EXPORT Rect ToEnclosedRect(const RectF& rect);
 
+// Returns the Rect after snapping the corners of the RectF to an integer grid.
+// This should only be used when the RectF you provide is expected to be an
+// integer rect with floating point error. If it is an arbitrary RectF, then
+// you should use a different method.
+UI_EXPORT Rect ToNearestRect(const RectF& rect);
+
 // Returns a Rect obtained by flooring the values of the given RectF.
 // Please prefer the previous two functions in new code.
 UI_EXPORT Rect ToFlooredRectDeprecated(const RectF& rect);