Selection API: deleteFromDocument() should not call setBaseAndExtent().

third_party/WebKit/Source/core/editing/DOMSelection.cpp

Index: third_party/WebKit/Source/core/editing/DOMSelection.cpp
diff --git a/third_party/WebKit/Source/core/editing/DOMSelection.cpp b/third_party/WebKit/Source/core/editing/DOMSelection.cpp
index 9d5c79129f8a36f0c44ffb284c4f318fa609f68a..a4e99f63858d1afefef65013914b0e6c14518a8b 100644
--- a/third_party/WebKit/Source/core/editing/DOMSelection.cpp
+++ b/third_party/WebKit/Source/core/editing/DOMSelection.cpp
@@ -672,12 +672,8 @@ void DOMSelection::deleteFromDocument() {
   if (!selectedRange)
     return;
 
+  // |selectedRange| may point nodes in a different root.
   selectedRange->deleteContents(ASSERT_NO_EXCEPTION);
-
-  setBaseAndExtent(selectedRange->startContainer(),
-                   selectedRange->startOffset(),
-                   selectedRange->startContainer(),
-                   selectedRange->startOffset(), ASSERT_NO_EXCEPTION);
 }
 
 bool DOMSelection::containsNode(const Node* n, bool allowPartial) const {