diff -r 000000000000 -r 4f2f89ce4247 WebKit/win/WebJavaScriptCollector.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/win/WebJavaScriptCollector.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2007, 2008 Apple 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "WebKitDLL.h"
+#include "WebJavaScriptCollector.h"
+
+#pragma warning(push, 0)
+#include <JavaScriptCore/JSGlobalData.h>
+#include <JavaScriptCore/collector.h>
+#include <WebCore/GCController.h>
+#include <WebCore/JSDOMWindow.h>
+#include <runtime/JSLock.h>
+#pragma warning(pop)
+
+using namespace JSC;
+using namespace WebCore;
+
+// WebJavaScriptCollector ---------------------------------------------------------------------------
+
+WebJavaScriptCollector::WebJavaScriptCollector()
+: m_refCount(0)
+{
+    gClassCount++;
+    gClassNameCount.add("WebJavaScriptCollector");
+}
+
+WebJavaScriptCollector::~WebJavaScriptCollector()
+{
+    gClassCount--;
+    gClassNameCount.remove("WebJavaScriptCollector");
+}
+
+WebJavaScriptCollector* WebJavaScriptCollector::createInstance()
+{
+    WebJavaScriptCollector* instance = new WebJavaScriptCollector();
+    instance->AddRef();
+    return instance;
+}
+
+// IUnknown -------------------------------------------------------------------
+
+HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::QueryInterface(REFIID riid, void** ppvObject)
+{
+    *ppvObject = 0;
+    if (IsEqualGUID(riid, IID_IUnknown))
+        *ppvObject = static_cast<IWebJavaScriptCollector*>(this);
+    else if (IsEqualGUID(riid, IID_IWebJavaScriptCollector))
+        *ppvObject = static_cast<IWebJavaScriptCollector*>(this);
+    else
+        return E_NOINTERFACE;
+
+    AddRef();
+    return S_OK;
+}
+
+ULONG STDMETHODCALLTYPE WebJavaScriptCollector::AddRef(void)
+{
+    return ++m_refCount;
+}
+
+ULONG STDMETHODCALLTYPE WebJavaScriptCollector::Release(void)
+{
+    ULONG newRef = --m_refCount;
+    if (!newRef)
+        delete(this);
+
+    return newRef;
+}
+
+// IWebJavaScriptCollector ------------------------------------------------------------------------------
+
+HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collect()
+{
+    gcController().garbageCollectNow();
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collectOnAlternateThread( 
+    /* [in] */ BOOL waitUntilDone)
+{
+    gcController().garbageCollectOnAlternateThreadForDebugging(!!waitUntilDone);
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::objectCount( 
+    /* [retval][out] */ UINT* count)
+{
+    if (!count) {
+        ASSERT_NOT_REACHED();
+        return E_POINTER;
+    }
+
+    JSLock lock(SilenceAssertionsOnly);
+    *count = (UINT)JSDOMWindow::commonJSGlobalData()->heap.objectCount();
+    return S_OK;
+}