--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/page/Performance.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,93 @@
+/*
+ * 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.
+ */
+
+#include "config.h"
+#include "Performance.h"
+
+#include "MemoryInfo.h"
+#include "Navigation.h"
+#include "Timing.h"
+
+#if ENABLE(WEB_TIMING)
+
+#include "Frame.h"
+
+namespace WebCore {
+
+Performance::Performance(Frame* frame)
+    : m_frame(frame)
+{
+}
+
+Frame* Performance::frame() const
+{
+    return m_frame;
+}
+
+void Performance::disconnectFrame()
+{
+    if (m_memory)
+        m_memory = 0;
+    if (m_navigation) {
+        m_navigation->disconnectFrame();
+        m_navigation = 0;
+    }
+    if (m_timing) {
+        m_timing->disconnectFrame();
+        m_timing = 0;
+    }
+    m_frame = 0;
+}
+
+MemoryInfo* Performance::memory() const
+{
+    m_memory = MemoryInfo::create(m_frame);
+    return m_memory.get();
+}
+
+Navigation* Performance::navigation() const
+{
+    if (!m_navigation)
+        m_navigation = Navigation::create(m_frame);
+
+    return m_navigation.get();
+}
+
+Timing* Performance::timing() const
+{
+    if (!m_timing)
+        m_timing = Timing::create(m_frame);
+
+    return m_timing.get();
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(WEB_TIMING)