Use WebNode::getElementsByHTMLTagName instead of getElementsByTagName.

components/autofill/content/renderer/form_autofill_util.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/content/renderer/form_autofill_util.h"
 
 #include <map>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 890 matching lines @@
   // If we failed to extract any fields, give up.  Also, to avoid overly
   // expensive computation, we impose a maximum number of allowable fields.
   if (form_fields.empty() || form_fields.size() > kMaxParseableFields)
     return false;
 
   // Loop through the label elements inside the form element.  For each label
   // element, get the corresponding form control element, use the form control
   // element's name as a key into the <name, FormFieldData> map to find the
   // previously created FormFieldData and set the FormFieldData's label to the
   // label.firstChild().nodeValue() of the label element.
-  WebElementCollection labels = form_element.getElementsByTagName(kLabel);
+  WebElementCollection labels = form_element.getElementsByHTMLTagName(kLabel);
   DCHECK(!labels.isNull());
   for (WebElement item = labels.firstItem(); !item.isNull();
        item = labels.nextItem()) {
     WebLabelElement label = item.to<WebLabelElement>();
     WebFormControlElement field_element =
         label.correspondingControl().to<WebFormControlElement>();
 
     base::string16 element_name;
     if (field_element.isNull()) {
       // Sometimes site authors will incorrectly specify the corresponding
@@ skipping 259 matching lines @@
 
 gfx::RectF GetScaledBoundingBox(float scale, WebFormControlElement* element) {
   gfx::Rect bounding_box(element->boundsInViewportSpace());
   return gfx::RectF(bounding_box.x() * scale,
                     bounding_box.y() * scale,
                     bounding_box.width() * scale,
                     bounding_box.height() * scale);
 }
 
 }  // namespace autofill