Avoid implicit conversions to floats in dart:ui

ci/licenses_golden/licenses_flutter

@@ -1644,6 +1644,7 @@ ORIGIN: ../../../flutter/lib/ui/dart_wrapper.h + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/ui/experiments/scene.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/ui/experiments/setup_hooks.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/ui/experiments/ui.dart + ../../../flutter/LICENSE
+ORIGIN: ../../../flutter/lib/ui/floating_point.h + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/ui/geometry.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/ui/hash_codes.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/ui/hooks.dart + ../../../flutter/LICENSE
@@ -4184,6 +4185,7 @@ FILE: ../../../flutter/lib/ui/dart_wrapper.h
 FILE: ../../../flutter/lib/ui/experiments/scene.dart
 FILE: ../../../flutter/lib/ui/experiments/setup_hooks.dart
 FILE: ../../../flutter/lib/ui/experiments/ui.dart
+FILE: ../../../flutter/lib/ui/floating_point.h
 FILE: ../../../flutter/lib/ui/geometry.dart
 FILE: ../../../flutter/lib/ui/hash_codes.dart
 FILE: ../../../flutter/lib/ui/hooks.dart

display_list/dl_color.h

@@ -84,7 +84,7 @@ struct DlColor {
   bool operator!=(uint32_t const& other) const { return argb != other; }
 
  private:
-  static float toF(uint8_t comp) { return comp * (1.0 / 255); }
+  static float toF(uint8_t comp) { return comp * (1.0f / 255); }
   static uint8_t toC(float fComp) { return round(fComp * 255); }
 };
 

display_list/effects/dl_image_filter.h

@@ -249,14 +249,14 @@ class DlBlurImageFilter final : public DlImageFilter {
 
   SkRect* map_local_bounds(const SkRect& input_bounds,
                            SkRect& output_bounds) const override {
-    output_bounds = input_bounds.makeOutset(sigma_x_ * 3, sigma_y_ * 3);
+    output_bounds = input_bounds.makeOutset(sigma_x_ * 3.0f, sigma_y_ * 3.0f);
     return &output_bounds;
   }
 
   SkIRect* map_device_bounds(const SkIRect& input_bounds,
                              const SkMatrix& ctm,
                              SkIRect& output_bounds) const override {
-    return outset_device_bounds(input_bounds, sigma_x_ * 3.0, sigma_y_ * 3.0,
+    return outset_device_bounds(input_bounds, sigma_x_ * 3.0f, sigma_y_ * 3.0f,
                                 ctm, output_bounds);
   }
 

flow/embedded_views.h

@@ -118,7 +118,7 @@ class Mutator {
     return *filter_mutation_;
   }
   const int& GetAlpha() const { return alpha_; }
-  float GetAlphaFloat() const { return (alpha_ / 255.0); }
+  float GetAlphaFloat() const { return (alpha_ / 255.0f); }
 
   bool operator==(const Mutator& other) const {
     if (type_ != other.type_) {

flow/layers/opacity_layer.h

@@ -45,7 +45,7 @@ class OpacityLayer : public CacheableContainerLayer {
     children_can_accept_opacity_ = value;
   }
 
-  SkScalar opacity() const { return alpha_ * 1.0 / SK_AlphaOPAQUE; }
+  SkScalar opacity() const { return alpha_ * 1.0f / SK_AlphaOPAQUE; }
 
  private:
   SkAlpha alpha_;