Switch to equalIgnoringASCIICase throughout modules/accessibility

BUG=627682

Review-Url: https://codereview.chromium.org/2793913007
Cr-Commit-Position: refs/heads/master@{#461858}
void AXLayoutObject::detachRemoteSVGRoot() {
  if (AXSVGRoot* root = remoteSVGRootElement())
    root->setParent(0);
}

void AXLayoutObject::detachRemoteSVGRoot() {
  if (AXSVGRoot* root = remoteSVGRootElement())
    root->setParent(0);
}
