Switch to equalIgnoringASCIICase throughout modules/accessibility

BUG=627682

Review-Url: https://codereview.chromium.org/2793913007
Cr-Commit-Position: refs/heads/master@{#461858}
bool AXLayoutObject::isFocused() const {
  if (!getDocument())
    return false;

  Element* focusedElement = getDocument()->focusedElement();
  if (!focusedElement)
    return false;
  AXObject* focusedObject = axObjectCache().getOrCreate(focusedElement);
  if (!focusedObject || !focusedObject->isAXLayoutObject())
    return false;

  if (focusedObject == this ||
      (roleValue() == WebAreaRole &&
       getDocument()->frame()->selection().isFocusedAndActive()))
    return true;

  return false;
}

bool AXLayoutObject::isFocused() const {
  if (!getDocument())
    return false;

  Element* focusedElement = getDocument()->focusedElement();
  if (!focusedElement)
    return false;
  AXObject* focusedObject = axObjectCache().getOrCreate(focusedElement);
  if (!focusedObject || !focusedObject->isAXLayoutObject())
    return false;

  if (focusedObject == this ||
      (roleValue() == WebAreaRole &&
       getDocument()->frame()->selection().isFocusedAndActive()))
    return true;

  return false;
}
