Update WebNode::getElementsByTagName() callers to use a WebNodeCollection

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 10 matching lines @@
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebExceptionCode.h"
 #include "third_party/WebKit/public/web/WebFormControlElement.h"
 #include "third_party/WebKit/public/web/WebFormElement.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebInputElement.h"
 #include "third_party/WebKit/public/web/WebLabelElement.h"
 #include "third_party/WebKit/public/web/WebNode.h"
+#include "third_party/WebKit/public/web/WebNodeCollection.h"
 #include "third_party/WebKit/public/web/WebNodeList.h"
 #include "third_party/WebKit/public/web/WebOptionElement.h"
 #include "third_party/WebKit/public/web/WebSelectElement.h"
 #include "third_party/WebKit/public/web/WebTextAreaElement.h"
 
 using blink::WebDocument;
 using blink::WebElement;
 using blink::WebExceptionCode;
 using blink::WebFormControlElement;
 using blink::WebFormElement;
 using blink::WebFrame;
 using blink::WebInputElement;
 using blink::WebLabelElement;
 using blink::WebNode;
+using blink::WebNodeCollection;
 using blink::WebNodeList;
 using blink::WebOptionElement;
 using blink::WebSelectElement;
 using blink::WebTextAreaElement;
 using blink::WebString;
 using blink::WebVector;
 
 namespace autofill {
 namespace {
 
@@ skipping 843 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.
-  WebNodeList labels = form_element.getElementsByTagName(kLabel);
-  for (unsigned i = 0; i < labels.length(); ++i) {
-    WebLabelElement label = labels.item(i).to<WebLabelElement>();
+  WebNodeCollection labels = form_element.getElementsByTagName(kLabel);
+  DCHECK(!labels.isNull());
+  for (WebNode 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
       // field element's name rather than its id, so we compensate here.
       element_name = label.getAttribute(kFor);
     } else if (
         !field_element.isFormControlElement() ||
@@ skipping 256 matching lines @@
 
 gfx::RectF GetScaledBoundingBox(float scale, WebInputElement* 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