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diff --git a/Source/WebKit2/WebProcess/win/WebProcessWin.cpp b/Source/WebKit2/WebProcess/win/WebProcessWin.cpp
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+++ b/Source/WebKit2/WebProcess/win/WebProcessWin.cpp
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+/*
+ * Copyright (C) 2010 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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 "WebProcess.h"
+
+#include "WebProcessCreationParameters.h"
+#include <WebCore/FileSystem.h>
+#include <WebCore/MemoryCache.h>
+#include <WebCore/PageCache.h>
+#include <WebCore/Settings.h>
+#include <wtf/text/WTFString.h>
+
+#if USE(CFNETWORK)
+#include <CFNetwork/CFURLCachePriv.h>
+#include <CFNetwork/CFURLProtocolPriv.h>
+#include <WebCore/CookieStorageCFNet.h>
+#include <WebKitSystemInterface/WebKitSystemInterface.h> 
+#include <wtf/RetainPtr.h>
+#endif
+
+using namespace WebCore;
+using namespace std;
+
+namespace WebKit {
+
+static uint64_t memorySize()
+{
+    MEMORYSTATUSEX statex;
+    statex.dwLength = sizeof(statex);
+    GlobalMemoryStatusEx(&statex);
+    return statex.ullTotalPhys;
+}
+
+static uint64_t volumeFreeSize(CFStringRef cfstringPath)
+{
+    WTF::String path(cfstringPath);
+    ULARGE_INTEGER freeBytesToCaller;
+    BOOL result = GetDiskFreeSpaceExW((LPCWSTR)path.charactersWithNullTermination(), &freeBytesToCaller, 0, 0);
+    if (!result)
+        return 0;
+    return freeBytesToCaller.QuadPart;
+}
+
+void WebProcess::platformSetCacheModel(CacheModel cacheModel)
+{
+#if USE(CFNETWORK)
+    RetainPtr<CFStringRef> cfurlCacheDirectory(AdoptCF, wkCopyFoundationCacheDirectory());
+    if (!cfurlCacheDirectory)
+        cfurlCacheDirectory.adoptCF(WebCore::localUserSpecificStorageDirectory().createCFString());
+
+    // As a fudge factor, use 1000 instead of 1024, in case the reported byte 
+    // count doesn't align exactly to a megabyte boundary.
+    uint64_t memSize = memorySize() / 1024 / 1000;
+    uint64_t diskFreeSize = volumeFreeSize(cfurlCacheDirectory.get()) / 1024 / 1000;
+
+    unsigned cacheTotalCapacity = 0;
+    unsigned cacheMinDeadCapacity = 0;
+    unsigned cacheMaxDeadCapacity = 0;
+    double deadDecodedDataDeletionInterval = 0;
+    unsigned pageCacheCapacity = 0;
+    unsigned long urlCacheMemoryCapacity = 0;
+    unsigned long urlCacheDiskCapacity = 0;
+
+    calculateCacheSizes(cacheModel, memSize, diskFreeSize,
+        cacheTotalCapacity, cacheMinDeadCapacity, cacheMaxDeadCapacity, deadDecodedDataDeletionInterval,
+        pageCacheCapacity, urlCacheMemoryCapacity, urlCacheDiskCapacity);
+
+    memoryCache()->setCapacities(cacheMinDeadCapacity, cacheMaxDeadCapacity, cacheTotalCapacity);
+    memoryCache()->setDeadDecodedDataDeletionInterval(deadDecodedDataDeletionInterval);
+    pageCache()->setCapacity(pageCacheCapacity);
+
+    RetainPtr<CFURLCacheRef> cfurlCache(AdoptCF, CFURLCacheCopySharedURLCache());
+    CFURLCacheSetMemoryCapacity(cfurlCache.get(), urlCacheMemoryCapacity);
+    CFURLCacheSetDiskCapacity(cfurlCache.get(), max<unsigned long>(urlCacheDiskCapacity, CFURLCacheDiskCapacity(cfurlCache.get()))); // Don't shrink a big disk cache, since that would cause churn.
+#endif
+}
+
+void WebProcess::platformClearResourceCaches()
+{
+#if USE(CFNETWORK)
+    CFURLCacheRemoveAllCachedResponses(RetainPtr<CFURLCacheRef>(AdoptCF, CFURLCacheCopySharedURLCache()).get());
+#endif
+}
+
+void WebProcess::platformInitializeWebProcess(const WebProcessCreationParameters& parameters, CoreIPC::ArgumentDecoder*)
+{
+    setShouldPaintNativeControls(parameters.shouldPaintNativeControls);
+}
+
+void WebProcess::platformShutdown()
+{
+}
+
+void WebProcess::setShouldPaintNativeControls(bool shouldPaintNativeControls)
+{
+#if USE(SAFARI_THEME)
+    Settings::setShouldPaintNativeControls(shouldPaintNativeControls);
+#endif
+}
+
+} // namespace WebKit