Make scroll offset type of float in cc

ui/gfx/test/gfx_util.cc

Index: ui/gfx/test/gfx_util.cc
diff --git a/ui/gfx/test/gfx_util.cc b/ui/gfx/test/gfx_util.cc
index 2d670d4a9444aff4aa5d9e87a1a649439d108273..d8bf5f2af942e8b3eb54db125d47f78e8a39639e 100644
--- a/ui/gfx/test/gfx_util.cc
+++ b/ui/gfx/test/gfx_util.cc
@@ -15,6 +15,7 @@
 #include "ui/gfx/geometry/quad_f.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
+#include "ui/gfx/geometry/scroll_offset.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/geometry/size_f.h"
 #include "ui/gfx/geometry/vector2d.h"
@@ -118,6 +119,10 @@ void PrintTo(const RectF& rect, ::std::ostream* os) {
   *os << rect.ToString();
 }
 
+void PrintTo(const ScrollOffset& offset, ::std::ostream* os) {
+  *os << offset.ToString();
+}
+
 void PrintTo(const Size& size, ::std::ostream* os) {
   *os << size.ToString();
 }