Check if the next text node has a leading white space

third_party/WebKit/LayoutTests/editing/inserting/insert-space.html

Index: third_party/WebKit/LayoutTests/editing/inserting/insert-space.html
diff --git a/third_party/WebKit/LayoutTests/editing/inserting/insert-space.html b/third_party/WebKit/LayoutTests/editing/inserting/insert-space.html
index b207f0bf48a0768eb6570d30acfce8f0770eed44..7893a83b3978c094d90959a02d35d2e12fa3338c 100644
--- a/third_party/WebKit/LayoutTests/editing/inserting/insert-space.html
+++ b/third_party/WebKit/LayoutTests/editing/inserting/insert-space.html
@@ -57,4 +57,14 @@ test(() => assert_selection(
   },
   '<div contenteditable>\u00A0 \u00A0| </div>'),
   'Insert spaces into the editable <div> that only has <br> and space as child');
+
+test(() => assert_selection(
+  '<div contenteditable>|<br>\u000A</div>',
+  selection => {
+    selection.document.execCommand('insertText', false, ' ');
+    selection.document.execCommand('insertText', false, ' ');
+    selection.document.execCommand('insertText', false, ' ');
+  },
+  '<div contenteditable>\u00A0 \u00A0|\u000A</div>'),
+  'Insert spaces into the editable <div> that only has <br> and enter as child');
 </script>