Add use counters for NodeFilter being a function or an object

third_party/WebKit/Source/bindings/core/v8/V8NodeFilterCondition.cpp

 /*
  * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 18 matching lines @@
  */
 
 #include "config.h"
 #include "bindings/core/v8/V8NodeFilterCondition.h"
 
 #include "bindings/core/v8/ScriptController.h"
 #include "bindings/core/v8/V8HiddenValue.h"
 #include "bindings/core/v8/V8Node.h"
 #include "core/dom/Node.h"
 #include "core/dom/NodeFilter.h"
+#include "core/frame/UseCounter.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 V8NodeFilterCondition::V8NodeFilterCondition(v8::Local<v8::Value> filter, v8::Local<v8::Object> owner, ScriptState* scriptState)
     : m_scriptState(scriptState)
 {
     // ..acceptNode(..) will only dispatch m_filter if m_filter->IsObject().
     // We'll make sure m_filter is either usable by acceptNode or empty.
     // (See the fast/dom/node-filter-gc test for a case where 'empty' happens.)
@@ skipping 17 matching lines @@
 
     ASSERT(filter.IsEmpty() || filter->IsObject());
     if (filter.IsEmpty())
         return NodeFilter::FILTER_ACCEPT;
 
     v8::TryCatch exceptionCatcher(isolate);
 
     v8::Local<v8::Function> callback;
     v8::Local<v8::Value> receiver;
     if (filter->IsFunction()) {
+        UseCounter::countIfNotPrivateScript(isolate, callingExecutionContext(isolate), UseCounter::NodeFilterIsFunction);
         callback = v8::Local<v8::Function>::Cast(filter);
         receiver = v8::Undefined(isolate);
     } else {
         v8::Local<v8::Object> filterObject;
         if (!filter->ToObject(m_scriptState->context()).ToLocal(&filterObject)) {
             exceptionState.throwTypeError("NodeFilter is not an object");
             return NodeFilter::FILTER_REJECT;
         }
         v8::Local<v8::Value> value;
         if (!filterObject->Get(m_scriptState->context(), v8AtomicString(isolate, "acceptNode")).ToLocal(&value) || !value->IsFunction()) {
             exceptionState.throwTypeError("NodeFilter object does not have an acceptNode function");
             return NodeFilter::FILTER_REJECT;
         }
+        UseCounter::countIfNotPrivateScript(isolate, callingExecutionContext(isolate), UseCounter::NodeFilterIsObject);
         callback = v8::Local<v8::Function>::Cast(value);
         receiver = filter;
     }
 
     OwnPtr<v8::Local<v8::Value>[]> info = adoptArrayPtr(new v8::Local<v8::Value>[1]);
     info[0] = toV8(node, m_scriptState->context()->Global(), isolate);
     if (info[0].IsEmpty()) {
         if (exceptionCatcher.HasCaught())
             exceptionState.rethrowV8Exception(exceptionCatcher.Exception());
         return NodeFilter::FILTER_REJECT;
@@ skipping 14 matching lines @@
     }
     return uint32Value;
 }
 
 void V8NodeFilterCondition::setWeakCallback(const v8::WeakCallbackInfo<V8NodeFilterCondition>& data)
 {
     data.GetParameter()->m_filter.clear();
 }
 
 } // namespace blink