Why do we have this line when it makes sliders look editable?

BUG=None

Review-Url: https://codereview.chromium.org/2893963002
Cr-Commit-Position: refs/heads/master@{#473911}

content/browser/accessibility/browser_accessibility_com_win.cc

@@ -5132,9 +5132,6 @@ void BrowserAccessibilityComWin::InitRoleAndState() {
   if (owner()->HasState(ui::AX_STATE_EDITABLE))
     ia2_state |= IA2_STATE_EDITABLE;
 
-  if (owner()->HasAction(ui::AX_ACTION_SET_VALUE))
-    ia2_state |= IA2_STATE_EDITABLE;
-
   if (!owner()->GetStringAttribute(ui::AX_ATTR_AUTO_COMPLETE).empty())
     ia2_state |= IA2_STATE_SUPPORTS_AUTOCOMPLETION;