Make iterator for Element's attributes more lightweight

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index 8cf962e87e9c346f6df13bdf2c6cafd77a6838ef..aec6ac9e0ce8ebc167334be3a5bc15890a84c399 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -724,9 +724,9 @@ void InspectorDOMAgent::setAttributesAsText(ErrorString* errorString, int elemen
     }
 
     bool foundOriginalAttribute = false;
-    AttributeIteratorAccessor attributes = parsedElement->attributesIterator();
-    AttributeConstIterator end = attributes.end();
-    for (AttributeConstIterator it = attributes.begin(); it != end; ++it) {
+    AttributeCollection attributes = parsedElement->attributes();
+    AttributeCollection::const_iterator end = attributes.end();
+    for (AttributeCollection::const_iterator it = attributes.begin(); it != end; ++it) {
         // Add attribute pair
         String attributeName = it->name().toString();
         if (shouldIgnoreCase)
@@ -984,9 +984,9 @@ void InspectorDOMAgent::performSearch(ErrorString*, const String& whitespaceTrim
                 if (!element->hasAttributes())
                     break;
 
-                AttributeIteratorAccessor attributes = element->attributesIterator();
-                AttributeConstIterator end = attributes.end();
-                for (AttributeConstIterator it = attributes.begin(); it != end; ++it) {
+                AttributeCollection attributes = element->attributes();
+                AttributeCollection::const_iterator end = attributes.end();
+                for (AttributeCollection::const_iterator it = attributes.begin(); it != end; ++it) {
                     // Add attribute pair
                     if (it->localName().find(whitespaceTrimmedQuery, 0, false) != kNotFound) {
                         resultCollector.add(node);
@@ -1600,9 +1600,9 @@ PassRefPtr<TypeBuilder::Array<String> > InspectorDOMAgent::buildArrayForElementA
     // Go through all attributes and serialize them.
     if (!element->hasAttributes())
         return attributesValue.release();
-    AttributeIteratorAccessor attributes = element->attributesIterator();
-    AttributeConstIterator end = attributes.end();
-    for (AttributeConstIterator it = attributes.begin(); it != end; ++it) {
+    AttributeCollection attributes = element->attributes();
+    AttributeCollection::const_iterator end = attributes.end();
+    for (AttributeCollection::const_iterator it = attributes.begin(); it != end; ++it) {
         // Add attribute pair
         attributesValue->addItem(it->name().toString());
         attributesValue->addItem(it->value());