Add support for the object-position CSS property.

Source/core/rendering/RenderReplaced.cpp

Index: Source/core/rendering/RenderReplaced.cpp
diff --git a/Source/core/rendering/RenderReplaced.cpp b/Source/core/rendering/RenderReplaced.cpp
index 900fa7d50acfd333c8436bdb3f51a0418793d2c9..f83db589eb6935e7a2c50338f03efd3d26c52779 100644
--- a/Source/core/rendering/RenderReplaced.cpp
+++ b/Source/core/rendering/RenderReplaced.cpp
@@ -316,7 +316,7 @@ LayoutRect RenderReplaced::replacedContentRect(const LayoutSize* overriddenIntri
     LayoutRect contentRect = contentBoxRect();
     ObjectFit objectFit = style()->objectFit();
 
-    if (objectFit == ObjectFitFill) {
+    if (objectFit == ObjectFitFill && style()->objectPosition() == RenderStyle::initialObjectPosition()) {
         if (!isVideo() || RuntimeEnabledFeatures::objectFitPositionEnabled())
             return contentRect;
         objectFit = ObjectFitContain;
@@ -339,13 +339,13 @@ LayoutRect RenderReplaced::replacedContentRect(const LayoutSize* overriddenIntri
         finalRect.setSize(intrinsicSize);
         break;
     case ObjectFitFill:
+        break;
+    default:
         ASSERT_NOT_REACHED();
     }
 
-    // FIXME: This is where object-position should be taken into account, but since it's not
-    // implemented yet, assume the initial value of "50% 50%".
-    LayoutUnit xOffset = (contentRect.width() - finalRect.width()) / 2;
-    LayoutUnit yOffset = (contentRect.height() - finalRect.height()) / 2;
+    LayoutUnit xOffset = minimumValueForLength(style()->objectPosition().x(), contentRect.width() - finalRect.width(), view());
+    LayoutUnit yOffset = minimumValueForLength(style()->objectPosition().y(), contentRect.height() - finalRect.height(), view());
     finalRect.move(xOffset, yOffset);
 
     return finalRect;