HashTraits<RefPtr<P> >::PeekType should be raw pointer for better performance

Source/core/accessibility/AXObjectCache.cpp

Index: Source/core/accessibility/AXObjectCache.cpp
diff --git a/Source/core/accessibility/AXObjectCache.cpp b/Source/core/accessibility/AXObjectCache.cpp
index f9d270d80d4a0e841a7751dce6240bd177e9e7e5..1a215a7fa3a4098cb6b69fe915a86f8bba39f1af 100644
--- a/Source/core/accessibility/AXObjectCache.cpp
+++ b/Source/core/accessibility/AXObjectCache.cpp
@@ -192,7 +192,7 @@ AccessibilityObject* AXObjectCache::get(Widget* widget)
     if (!axID)
         return 0;
     
-    return m_objects.get(axID).get();    
+    return m_objects.get(axID);
 }
     
 AccessibilityObject* AXObjectCache::get(RenderObject* renderer)
@@ -205,7 +205,7 @@ AccessibilityObject* AXObjectCache::get(RenderObject* renderer)
     if (!axID)
         return 0;
 
-    return m_objects.get(axID).get();    
+    return m_objects.get(axID);
 }
 
 AccessibilityObject* AXObjectCache::get(Node* node)
@@ -228,12 +228,12 @@ AccessibilityObject* AXObjectCache::get(Node* node)
     }
 
     if (renderID)
-        return m_objects.get(renderID).get();
+        return m_objects.get(renderID);
 
     if (!nodeID)
         return 0;
 
-    return m_objects.get(nodeID).get();
+    return m_objects.get(nodeID);
 }
 
 // FIXME: This probably belongs on Node.
@@ -465,7 +465,7 @@ void AXObjectCache::remove(AXID axID)
         return;
     
     // first fetch object to operate some cleanup functions on it 
-    AccessibilityObject* obj = m_objects.get(axID).get();
+    AccessibilityObject* obj = m_objects.get(axID);
     if (!obj)
         return;