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diff --git a/Source/WebKit2/PluginProcess/mac/PluginControllerProxyMac.mm b/Source/WebKit2/PluginProcess/mac/PluginControllerProxyMac.mm
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+++ b/Source/WebKit2/PluginProcess/mac/PluginControllerProxyMac.mm
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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.
+ */
+
+#if ENABLE(PLUGIN_PROCESS)
+
+#include "PluginControllerProxy.h"
+
+#include <QuartzCore/QuartzCore.h>
+#include "PluginProcess.h"
+#include "WebKitSystemInterface.h"
+
+using namespace WebCore;
+
+namespace WebKit {
+
+void PluginControllerProxy::platformInitialize()
+{
+    CALayer * platformLayer = m_plugin->pluginLayer();
+    if (!platformLayer)
+        return;
+
+    ASSERT(!m_remoteLayerClient);
+
+    m_remoteLayerClient = WKCARemoteLayerClientMakeWithServerPort(PluginProcess::shared().compositingRenderServerPort());
+    ASSERT(m_remoteLayerClient);
+
+    WKCARemoteLayerClientSetLayer(m_remoteLayerClient.get(), platformLayer);
+}
+
+void PluginControllerProxy::platformDestroy()
+{
+    if (!m_remoteLayerClient)
+        return;
+
+    WKCARemoteLayerClientInvalidate(m_remoteLayerClient.get());
+    m_remoteLayerClient = nullptr;
+}
+
+uint32_t PluginControllerProxy::remoteLayerClientID() const
+{
+    if (!m_remoteLayerClient)
+        return 0;
+
+    return WKCARemoteLayerClientGetClientId(m_remoteLayerClient.get());
+}
+
+void PluginControllerProxy::platformGeometryDidChange(const IntRect& frameRect, const IntRect&)
+{
+    CALayer * pluginLayer = m_plugin->pluginLayer();
+
+    // We don't want to animate to the new size so we disable actions for this transaction.
+    [CATransaction begin];
+    [CATransaction setValue:[NSNumber numberWithBool:YES] forKey:kCATransactionDisableActions];
+    [pluginLayer setFrame:CGRectMake(0, 0, frameRect.width(), frameRect.height())];
+    [CATransaction commit];
+}
+
+} // namespace WebKit
+
+#endif // ENABLE(PLUGIN_PROCESS)