Add/remove spell checking markers in text inputs depending on focus.

Source/core/html/HTMLInputElement.cpp

Index: Source/core/html/HTMLInputElement.cpp
diff --git a/Source/core/html/HTMLInputElement.cpp b/Source/core/html/HTMLInputElement.cpp
index 6c8b4877f4663da5e9de86acfc6463e522706c34..915603901377fc4e35ec6731c5eb5514f12e4cc3 100644
--- a/Source/core/html/HTMLInputElement.cpp
+++ b/Source/core/html/HTMLInputElement.cpp
@@ -393,6 +393,15 @@ void HTMLInputElement::updateFocusAppearance(bool restorePreviousSelection)
         HTMLTextFormControlElement::updateFocusAppearance(restorePreviousSelection);
 }
 
+void HTMLInputElement::beginEditing()
+{
+    if (!isTextField())
+        return;
+
+    if (Frame* frame = document()->frame())
+        frame->editor()->textFieldDidBeginEditing(this);
+}
+
 void HTMLInputElement::endEditing()
 {
     if (!isTextField())