diff --git a/lib/ui/window/viewport_metrics.h b/lib/ui/window/viewport_metrics.h
index 5085d06f42724b3aca48fac50edb163ee24bf46a..0ccb50ccc43741f50c268e87e03929ffed877ebd 100644
--- a/lib/ui/window/viewport_metrics.h
+++ b/lib/ui/window/viewport_metrics.h
@@ -10,17 +10,17 @@
 namespace blink {
 
 struct ViewportMetrics {
-  float device_pixel_ratio = 1.0;
-  int32_t physical_width = 0;
-  int32_t physical_height = 0;
-  int32_t physical_padding_top = 0;
-  int32_t physical_padding_right = 0;
-  int32_t physical_padding_bottom = 0;
-  int32_t physical_padding_left = 0;
-  int32_t physical_view_inset_top = 0;
-  int32_t physical_view_inset_right = 0;
-  int32_t physical_view_inset_bottom = 0;
-  int32_t physical_view_inset_left = 0;
+  double device_pixel_ratio = 1.0;
+  double physical_width = 0;
+  double physical_height = 0;
+  double physical_padding_top = 0;
+  double physical_padding_right = 0;
+  double physical_padding_bottom = 0;
+  double physical_padding_left = 0;
+  double physical_view_inset_top = 0;
+  double physical_view_inset_right = 0;
+  double physical_view_inset_bottom = 0;
+  double physical_view_inset_left = 0;
 };
 
 struct LogicalSize {
diff --git a/lib/ui/window/window.cc b/lib/ui/window/window.cc
index 2d5d7a1569b8fcf4c20e9316fe8f605beb4a4955..0fe9a12efaa1c1948431e242ed07b55ba451645a 100644
--- a/lib/ui/window/window.cc
+++ b/lib/ui/window/window.cc
@@ -149,16 +149,16 @@ void Window::UpdateWindowMetrics(const ViewportMetrics& metrics) {
       library_.value(), "_updateWindowMetrics",
       {
           ToDart(metrics.device_pixel_ratio),
-          ToDart(static_cast<double>(metrics.physical_width)),
-          ToDart(static_cast<double>(metrics.physical_height)),
-          ToDart(static_cast<double>(metrics.physical_padding_top)),
-          ToDart(static_cast<double>(metrics.physical_padding_right)),
-          ToDart(static_cast<double>(metrics.physical_padding_bottom)),
-          ToDart(static_cast<double>(metrics.physical_padding_left)),
-          ToDart(static_cast<double>(metrics.physical_view_inset_top)),
-          ToDart(static_cast<double>(metrics.physical_view_inset_right)),
-          ToDart(static_cast<double>(metrics.physical_view_inset_bottom)),
-          ToDart(static_cast<double>(metrics.physical_view_inset_left)),
+          ToDart(metrics.physical_width),
+          ToDart(metrics.physical_height),
+          ToDart(metrics.physical_padding_top),
+          ToDart(metrics.physical_padding_right),
+          ToDart(metrics.physical_padding_bottom),
+          ToDart(metrics.physical_padding_left),
+          ToDart(metrics.physical_view_inset_top),
+          ToDart(metrics.physical_view_inset_right),
+          ToDart(metrics.physical_view_inset_bottom),
+          ToDart(metrics.physical_view_inset_left),
       });
 }