Update layer size from LayoutBox::UpdateAfterLayout

third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
index 17b6bb2da6f5be29cf3b3e85886f294edabcc5a1..941ddcddb20ce617eb3f2803d44d115e88666c2c 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
@@ -655,11 +655,13 @@ void LayoutBlockFlow::DetermineLogicalLeftPositionForChild(LayoutBox& child) {
 
 void LayoutBlockFlow::SetLogicalLeftForChild(LayoutBox& child,
                                              LayoutUnit logical_left) {
+  LayoutPoint new_location(child.Location());
   if (IsHorizontalWritingMode()) {
-    child.SetX(logical_left);
+    new_location.SetX(logical_left);
   } else {
-    child.SetY(logical_left);
+    new_location.SetY(logical_left);
   }
+  child.SetLocationAndUpdateOverflowControlsIfNeeded(new_location);

[bokan, 2017/05/12 15:58:17]

Should we not do this for the SetLogicalTopForChild method below too?

[szager1, 2017/05/12 19:12:12]

No, because SetLogicalTopForChild is called *before* the child runs layout (as
opposed to this method, which is called *after* the child runs layout).

 }
 
 void LayoutBlockFlow::SetLogicalTopForChild(LayoutBox& child,