Code: bool isNodeAriaVisible(Node* node) {
  if (!node)
    return false;

   if (!node->isElementNode())
     return false;
 
  return equalIgnoringCase(toElement(node)->getAttribute(aria_hiddenAttr),
                           "false");
 }

Commit Message: Switch to equalIgnoringASCIICase throughout modules/accessibility

BUG=627682

Review-Url: https://codereview.chromium.org/2793913007
Cr-Commit-Position: refs/heads/master@{#461858}
CWE ID: CWE-254
bool isNodeAriaVisible(Node* node) {
  if (!node)
    return false;

   if (!node->isElementNode())
     return false;
 
  return equalIgnoringASCIICase(toElement(node)->getAttribute(aria_hiddenAttr),
                                "false");
 }
