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diff --git a/WebKitTools/DumpRenderTree/chromium/WebThemeEngineDRT.h b/WebKitTools/DumpRenderTree/chromium/WebThemeEngineDRT.h
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+/*
+ * Copyright (C) 2010 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
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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.
+ */
+
+// This implements the WebThemeEngine API used by the Windows version of
+// Chromium to render native form controls like checkboxes, radio buttons,
+// and scroll bars.
+// The normal implementation (native_theme) renders the controls using either
+// the UXTheme theming engine present in XP, Vista, and Win 7, or the "classic"
+// theme used if that theme is selected in the Desktop settings.
+// Unfortunately, both of these themes render controls differently on the
+// different versions of Windows.
+//
+// In order to ensure maximum consistency of baselines across the different
+// Windows versions, we provide a simple implementation for DRT here
+// instead. These controls are actually platform-independent (they're rendered
+// using Skia) and could be used on Linux and the Mac as well, should we
+// choose to do so at some point.
+//
+
+#ifndef WebThemeEngineDRT_h
+#define WebThemeEngineDRT_h
+
+#include "public/WebThemeEngine.h"
+#include <wtf/Noncopyable.h>
+
+class WebThemeEngineDRT : public WebKit::WebThemeEngine, public Noncopyable {
+public:
+    WebThemeEngineDRT() {}
+
+    // WebThemeEngine methods:
+    virtual void paintButton(
+        WebKit::WebCanvas*, int part, int state, int classicState,
+        const WebKit::WebRect&);
+
+    virtual void paintMenuList(
+        WebKit::WebCanvas*, int part, int state, int classicState,
+        const WebKit::WebRect&);
+
+    virtual void paintScrollbarArrow(
+        WebKit::WebCanvas*, int state, int classicState,
+        const WebKit::WebRect&);
+
+    virtual void paintScrollbarThumb(
+        WebKit::WebCanvas*, int part, int state, int classicState,
+        const WebKit::WebRect&);
+
+    virtual void paintScrollbarTrack(
+        WebKit::WebCanvas*, int part, int state, int classicState,
+        const WebKit::WebRect&, const WebKit::WebRect& alignRect);
+
+    virtual void paintTextField(
+        WebKit::WebCanvas*, int part, int state, int classicState,
+        const WebKit::WebRect&, WebKit::WebColor, bool fillContentArea,
+        bool drawEdges);
+
+    virtual void paintTrackbar(
+        WebKit::WebCanvas*, int part, int state, int classicState,
+        const WebKit::WebRect&);
+
+    virtual void paintProgressBar(
+        WebKit::WebCanvas*, const WebKit::WebRect& barRect,
+        const WebKit::WebRect& valueRect,
+        bool determinate, double time);
+};
+
+#endif // WebThemeEngineDRT_h