Makes wm2 reset the bounds immediately after cloning the layer for

content/browser/web_contents/web_contents_view_aura.cc

Index: content/browser/web_contents/web_contents_view_aura.cc
diff --git a/content/browser/web_contents/web_contents_view_aura.cc b/content/browser/web_contents/web_contents_view_aura.cc
index 01460c7fd2a3213ad28dea9a3a6d82ee86f68c7c..ddb410fc1ff5ad02f1cd429e8a49a2b6c0ef6f62 100644
--- a/content/browser/web_contents/web_contents_view_aura.cc
+++ b/content/browser/web_contents/web_contents_view_aura.cc
@@ -498,8 +498,9 @@ void WebContentsViewAura::OnBoundsChanged(const gfx::Rect& old_bounds,
     if (window_->children()[i]->GetProperty(
             aura::client::kConstrainedWindowKey)) {
       gfx::Rect bounds = window_->children()[i]->bounds();
-      bounds.Offset((new_bounds.width() - old_bounds.width()) / 2,
-                    (new_bounds.height() - old_bounds.height()) / 2);
+      bounds.set_origin(
+          gfx::Point((new_bounds.width() - bounds.width()) / 2,
+                     (new_bounds.height() - bounds.height()) / 2));
       window_->children()[i]->SetBounds(bounds);
     }
   }