Making LayoutUnit conversions to Float type explicit

Source/core/css/CSSComputedStyleDeclaration.cpp

Index: Source/core/css/CSSComputedStyleDeclaration.cpp
diff --git a/Source/core/css/CSSComputedStyleDeclaration.cpp b/Source/core/css/CSSComputedStyleDeclaration.cpp
index ee643adfd35df8c9bb36db28e80313605b8cffb3..c05f07e0a4cdb6180a66f988f54c81e54fe9dad2 100644
--- a/Source/core/css/CSSComputedStyleDeclaration.cpp
+++ b/Source/core/css/CSSComputedStyleDeclaration.cpp
@@ -2055,9 +2055,9 @@ PassRefPtrWillBeRawPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValu
                 // RenderBox gives a marginRight() that is the distance between the right-edge of the child box
                 // and the right-edge of the containing box, when display == BLOCK. Let's calculate the absolute
                 // value of the specified margin-right % instead of relying on RenderBox's marginRight() value.
-                value = minimumValueForLength(marginRight, toRenderBox(renderer)->containingBlockLogicalWidthForContent());
+                value = minimumValueForLength(marginRight, toRenderBox(renderer)->containingBlockLogicalWidthForContent()).toFloat();
             } else {
-                value = toRenderBox(renderer)->marginRight();
+                value = toRenderBox(renderer)->marginRight().toFloat();
             }
             return zoomAdjustedPixelValue(value, *style);
         }