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diff --git a/Source/WebKit2/Shared/Plugins/Netscape/mac/NetscapePluginModuleMac.mm b/Source/WebKit2/Shared/Plugins/Netscape/mac/NetscapePluginModuleMac.mm
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+++ b/Source/WebKit2/Shared/Plugins/Netscape/mac/NetscapePluginModuleMac.mm
@@ -0,0 +1,338 @@
+/*
+ * 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 "NetscapePluginModule.h"
+
+#include <WebCore/WebCoreNSStringExtras.h>
+#include <wtf/HashSet.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+static bool getPluginArchitecture(CFBundleRef bundle, cpu_type_t& pluginArchitecture)
+{
+    RetainPtr<CFArrayRef> pluginArchitecturesArray(AdoptCF, CFBundleCopyExecutableArchitectures(bundle));
+    if (!pluginArchitecturesArray)
+        return false;
+
+    // Turn the array into a set.
+    HashSet<unsigned> architectures;
+    for (CFIndex i = 0, numPluginArchitectures = CFArrayGetCount(pluginArchitecturesArray.get()); i < numPluginArchitectures; ++i) {
+        CFNumberRef number = static_cast<CFNumberRef>(CFArrayGetValueAtIndex(pluginArchitecturesArray.get(), i));
+        
+        SInt32 architecture;
+        if (!CFNumberGetValue(number, kCFNumberSInt32Type, &architecture))
+            continue;
+        architectures.add(architecture);
+    }
+    
+#ifdef __x86_64__
+    // We only support 64-bit Intel plug-ins on 64-bit Intel.
+    if (architectures.contains(kCFBundleExecutableArchitectureX86_64)) {
+        pluginArchitecture = CPU_TYPE_X86_64;
+        return true;
+    }
+
+    // We also support 32-bit Intel plug-ins on 64-bit Intel.
+    if (architectures.contains(kCFBundleExecutableArchitectureI386)) {
+        pluginArchitecture = CPU_TYPE_X86;
+        return true;
+    }
+#elif defined(__i386__)
+    // We only support 32-bit Intel plug-ins on 32-bit Intel.
+    if (architectures.contains(kCFBundleExecutableArchitectureI386)) {
+        pluginArchitecture = CPU_TYPE_X86;
+        return true;
+    }
+#elif defined(__ppc64__)
+    // We only support 64-bit PPC plug-ins on 64-bit PPC.
+    if (architectures.contains(kCFBundleExecutableArchitecturePPC64)) {
+        pluginArchitecture = CPU_TYPE_POWERPC64;
+        return true;
+    }
+#elif defined(__ppc__)
+    // We only support 32-bit PPC plug-ins on 32-bit PPC.
+    if (architectures.contains(kCFBundleExecutableArchitecturePPC)) {
+        pluginArchitecture = CPU_TYPE_POWERPC;
+        return true;
+    }
+#else
+#error "Unhandled architecture"
+#endif
+
+    return false;
+}
+
+static bool getPluginInfoFromPropertyLists(CFBundleRef bundle, PluginInfo& pluginInfo)
+{
+    // FIXME: Handle WebPluginMIMETypesFilenameKey.
+    
+    CFDictionaryRef mimeTypes = static_cast<CFDictionaryRef>(CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginMIMETypes")));
+    if (!mimeTypes || CFGetTypeID(mimeTypes) != CFDictionaryGetTypeID())
+        return false;
+
+    // Get the plug-in name.
+    CFStringRef pluginName = static_cast<CFStringRef>(CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginName")));
+    if (pluginName && CFGetTypeID(pluginName) == CFStringGetTypeID())
+        pluginInfo.name = pluginName;
+    
+    // Get the plug-in description.
+    CFStringRef pluginDescription = static_cast<CFStringRef>(CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginDescription")));
+    if (pluginDescription && CFGetTypeID(pluginDescription) == CFStringGetTypeID())
+        pluginInfo.desc = pluginDescription;
+    
+    // Get the MIME type mapping dictionary.
+    CFIndex numMimeTypes = CFDictionaryGetCount(mimeTypes);
+    Vector<CFStringRef> mimeTypesVector(numMimeTypes);
+    Vector<CFDictionaryRef> mimeTypeInfoVector(numMimeTypes);
+    CFDictionaryGetKeysAndValues(mimeTypes, reinterpret_cast<const void**>(mimeTypesVector.data()), reinterpret_cast<const void**>(mimeTypeInfoVector.data()));
+    
+    for (CFIndex i = 0; i < numMimeTypes; ++i) {
+        MimeClassInfo mimeClassInfo;
+        
+        // If this MIME type is invalid, ignore it.
+        CFStringRef mimeType = mimeTypesVector[i];
+        if (!mimeType || CFGetTypeID(mimeType) != CFStringGetTypeID() || CFStringGetLength(mimeType) == 0)
+            continue;
+
+        // If this MIME type doesn't have a valid info dictionary, ignore it.
+        CFDictionaryRef mimeTypeInfo = mimeTypeInfoVector[i];
+        if (!mimeTypeInfo || CFGetTypeID(mimeTypeInfo) != CFDictionaryGetTypeID())
+            continue;
+
+        // Get the MIME type description.
+        CFStringRef mimeTypeDescription = static_cast<CFStringRef>(CFDictionaryGetValue(mimeTypeInfo, CFSTR("WebPluginTypeDescription")));
+        if (mimeTypeDescription && CFGetTypeID(mimeTypeDescription) != CFStringGetTypeID())
+            mimeTypeDescription = 0;
+
+        mimeClassInfo.type = String(mimeType).lower();
+        mimeClassInfo.desc = mimeTypeDescription;
+
+        // Now get the extensions for this MIME type.
+        CFIndex numExtensions = 0;
+        CFArrayRef extensionsArray = static_cast<CFArrayRef>(CFDictionaryGetValue(mimeTypeInfo, CFSTR("WebPluginExtensions")));
+        if (extensionsArray && CFGetTypeID(extensionsArray) == CFArrayGetTypeID())
+            numExtensions = CFArrayGetCount(extensionsArray);
+
+        for (CFIndex i = 0; i < numExtensions; ++i) {
+            CFStringRef extension = static_cast<CFStringRef>(CFArrayGetValueAtIndex(extensionsArray, i));
+            if (!extension || CFGetTypeID(extension) != CFStringGetTypeID())
+                continue;
+            
+            mimeClassInfo.extensions.append(String(extension).lower());
+        }
+
+        // Add this MIME type.
+        pluginInfo.mimes.append(mimeClassInfo);
+    }
+
+    return true;    
+}
+
+class ResourceMap {
+public:
+    explicit ResourceMap(CFBundleRef bundle)
+        : m_bundle(bundle)
+        , m_currentResourceFile(CurResFile())
+        , m_bundleResourceMap(CFBundleOpenBundleResourceMap(m_bundle))
+    {
+        UseResFile(m_bundleResourceMap);
+    }
+
+    ~ResourceMap()
+    {
+        // Close the resource map.
+        CFBundleCloseBundleResourceMap(m_bundle, m_bundleResourceMap);
+        
+        // And restore the old resource.
+        UseResFile(m_currentResourceFile);
+    }
+
+    bool isValid() const { return m_bundleResourceMap != -1; }
+
+private:
+    CFBundleRef m_bundle;
+    ResFileRefNum m_currentResourceFile;
+    ResFileRefNum m_bundleResourceMap;
+};
+
+static bool getStringListResource(ResID resourceID, Vector<String>& stringList) {
+    Handle stringListHandle = Get1Resource('STR#', resourceID);
+    if (!stringListHandle || !*stringListHandle)
+        return false;
+
+    // Get the string list size.
+    Size stringListSize = GetHandleSize(stringListHandle);
+    if (stringListSize < static_cast<Size>(sizeof(UInt16)))
+        return false;
+
+    CFStringEncoding stringEncoding = stringEncodingForResource(stringListHandle);
+
+    unsigned char* ptr = reinterpret_cast<unsigned char*>(*stringListHandle);
+    unsigned char* end = ptr + stringListSize;
+    
+    // Get the number of strings in the string list.
+    UInt16 numStrings = *reinterpret_cast<UInt16*>(ptr);
+    ptr += sizeof(UInt16);
+
+    for (UInt16 i = 0; i < numStrings; ++i) {
+        // We're past the end of the string, bail.
+        if (ptr >= end)
+            return false;
+
+        // Get the string length.
+        unsigned char stringLength = *ptr++;
+
+        RetainPtr<CFStringRef> cfString(AdoptCF, CFStringCreateWithBytesNoCopy(kCFAllocatorDefault, ptr, stringLength, stringEncoding, false, kCFAllocatorNull));
+        if (!cfString.get())
+            return false;
+
+        stringList.append(cfString.get());
+        ptr += stringLength;
+    }
+
+    if (ptr != end)
+        return false;
+
+    return true;
+}
+
+static const ResID PluginNameOrDescriptionStringNumber = 126;
+static const ResID MIMEDescriptionStringNumber = 127;
+static const ResID MIMEListStringStringNumber = 128;
+
+static bool getPluginInfoFromCarbonResources(CFBundleRef bundle, PluginInfo& pluginInfo)
+{
+    ResourceMap resourceMap(bundle);
+    if (!resourceMap.isValid())
+        return false;
+
+    // Get the description and name string list.
+    Vector<String> descriptionAndName;
+    if (!getStringListResource(PluginNameOrDescriptionStringNumber, descriptionAndName))
+        return false;
+
+    // Get the MIME types and extensions string list. This list needs to be a multiple of two.
+    Vector<String> mimeTypesAndExtensions;
+    if (!getStringListResource(MIMEListStringStringNumber, mimeTypesAndExtensions))
+        return false;
+
+    if (mimeTypesAndExtensions.size() % 2)
+        return false;
+
+    size_t numMimeTypes = mimeTypesAndExtensions.size() / 2;
+    
+    // Now get the MIME type descriptions string list. This string list needs to be the same length as the number of MIME types.
+    Vector<String> mimeTypeDescriptions;
+    if (!getStringListResource(MIMEDescriptionStringNumber, mimeTypeDescriptions))
+        return false;
+
+    if (mimeTypeDescriptions.size() != numMimeTypes)
+        return false;
+
+    // Add all MIME types.
+    for (size_t i = 0; i < mimeTypesAndExtensions.size() / 2; ++i) {
+        MimeClassInfo mimeClassInfo;
+        
+        const String& mimeType = mimeTypesAndExtensions[i * 2];
+        const String& description = mimeTypeDescriptions[i];
+        
+        mimeClassInfo.type = mimeType.lower();
+        mimeClassInfo.desc = description;
+        
+        Vector<String> extensions;
+        mimeTypesAndExtensions[i * 2 + 1].split(',', extensions);
+        
+        for (size_t i = 0; i < extensions.size(); ++i)
+            mimeClassInfo.extensions.append(extensions[i].lower());
+
+        pluginInfo.mimes.append(mimeClassInfo);
+    }
+
+    // Set the description and name if they exist.
+    if (descriptionAndName.size() > 0)
+        pluginInfo.desc = descriptionAndName[0];
+    if (descriptionAndName.size() > 1)
+        pluginInfo.name = descriptionAndName[1];
+
+    return true;
+}
+
+bool NetscapePluginModule::getPluginInfo(const String& pluginPath, PluginInfoStore::Plugin& plugin)
+{
+    RetainPtr<CFStringRef> bundlePath(AdoptCF, pluginPath.createCFString());
+    RetainPtr<CFURLRef> bundleURL(AdoptCF, CFURLCreateWithFileSystemPath(kCFAllocatorDefault, bundlePath.get(), kCFURLPOSIXPathStyle, false));
+    
+    // Try to initialize the bundle.
+    RetainPtr<CFBundleRef> bundle(AdoptCF, CFBundleCreate(kCFAllocatorDefault, bundleURL.get()));
+    if (!bundle)
+        return false;
+    
+    // Check if this bundle is an NPAPI plug-in.
+    UInt32 packageType = 0;
+    CFBundleGetPackageInfo(bundle.get(), &packageType, 0);
+    if (packageType != FOUR_CHAR_CODE('BRPL'))
+        return false;
+    
+    // Check that the architecture is valid.
+    cpu_type_t pluginArchitecture = 0;
+    if (!getPluginArchitecture(bundle.get(), pluginArchitecture))
+        return false;
+    
+    // Check that there's valid info for this plug-in.
+    if (!getPluginInfoFromPropertyLists(bundle.get(), plugin.info) &&
+        !getPluginInfoFromCarbonResources(bundle.get(), plugin.info))
+        return false;
+    
+    plugin.path = pluginPath;
+    plugin.pluginArchitecture = pluginArchitecture;
+    plugin.bundleIdentifier = CFBundleGetIdentifier(bundle.get());
+    plugin.versionNumber = CFBundleGetVersionNumber(bundle.get());
+    
+    RetainPtr<CFStringRef> filename(AdoptCF, CFURLCopyLastPathComponent(bundleURL.get()));
+    plugin.info.file = filename.get();
+    
+    if (plugin.info.name.isNull())
+        plugin.info.name = plugin.info.file;
+    if (plugin.info.desc.isNull())
+        plugin.info.desc = plugin.info.file;
+    
+    return true;
+}
+
+void NetscapePluginModule::determineQuirks()
+{
+    PluginInfoStore::Plugin plugin;
+    if (!getPluginInfo(m_pluginPath, plugin))
+        return;
+
+    if (plugin.bundleIdentifier == "com.macromedia.Flash Player.plugin") {
+        // Flash requires that the return value of getprogname() be "WebKitPluginHost".
+        m_pluginQuirks.add(PluginQuirks::PrognameShouldBeWebKitPluginHost);
+    }
+}
+
+} // namespace WebKit