Ignore setSelectionRange when node is un-parented.

Source/core/html/HTMLTextFormControlElement.cpp

Index: Source/core/html/HTMLTextFormControlElement.cpp
diff --git a/Source/core/html/HTMLTextFormControlElement.cpp b/Source/core/html/HTMLTextFormControlElement.cpp
index 274fec19b5ce1c3adc6b0872f6d8d129bc393204..e277e527d1b8b81854ca0e0bc8f8dad08d1a9db4 100644
--- a/Source/core/html/HTMLTextFormControlElement.cpp
+++ b/Source/core/html/HTMLTextFormControlElement.cpp
@@ -348,7 +348,7 @@ static int indexForPosition(HTMLElement* innerEditor, const Position& passedPosi
 
 void HTMLTextFormControlElement::setSelectionRange(int start, int end, TextFieldSelectionDirection direction, NeedToDispatchSelectEvent eventBehaviour, SelectionOption selectionOption)
 {
-    if (hasOpenShadowRoot() || !isTextFormControl())
+    if (hasOpenShadowRoot() || !isTextFormControl() || !parentOrShadowHostNode())

[leviw_travelin_and_unemployed, 2015/02/20 21:53:48]

You probably want isRooted(). If you parent this form control element into
another element it'd pass this test, but still not be in the document.

[szager1, 2015/02/20 22:05:18]

Done.

         return;
 
     const int editorValueLength = static_cast<int>(innerEditorValue().length());