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diff --git a/Source/WebKit/chromium/tests/MemoryInstrumentationTest.cpp b/Source/WebKit/chromium/tests/MemoryInstrumentationTest.cpp
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+++ b/Source/WebKit/chromium/tests/MemoryInstrumentationTest.cpp
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+/*
+ * Copyright (C) 2012 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 "DataRef.h"
+#include "MemoryInstrumentationImpl.h"
+
+#include <gtest/gtest.h>
+
+#include <wtf/HashSet.h>
+#include <wtf/RefCounted.h>
+#include <wtf/Vector.h>
+
+using namespace WebCore;
+
+namespace {
+
+class NotInstrumented {
+public:
+    char m_data[42];
+};
+
+class Instrumented {
+public:
+    Instrumented() : m_notInstrumented(new NotInstrumented) { }
+    virtual ~Instrumented() { delete m_notInstrumented; }
+
+    virtual void reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
+    {
+        MemoryClassInfo info(memoryObjectInfo, this, MemoryInstrumentation::DOM);
+        info.addMember(m_notInstrumented);
+    }
+    NotInstrumented* m_notInstrumented;
+};
+
+TEST(MemoryInstrumentationTest, sizeOf)
+{
+    VisitedObjects visitedObjects;
+    MemoryInstrumentationImpl impl(visitedObjects);
+    Instrumented instrumented;
+    impl.addRootObject(instrumented);
+    EXPECT_EQ(sizeof(NotInstrumented), impl.reportedSizeForAllTypes());
+    EXPECT_EQ(1, visitedObjects.size());
+}
+
+TEST(MemoryInstrumentationTest, nullCheck)
+{
+    VisitedObjects visitedObjects;
+    MemoryInstrumentationImpl impl(visitedObjects);
+    Instrumented* instrumented = 0;
+    impl.addRootObject(instrumented);
+    EXPECT_EQ(0u, impl.reportedSizeForAllTypes());
+    EXPECT_EQ(0, visitedObjects.size());
+}
+
+TEST(MemoryInstrumentationTest, ptrVsRef)
+{
+    {
+        VisitedObjects visitedObjects;
+        MemoryInstrumentationImpl impl(visitedObjects);
+        Instrumented instrumented;
+        impl.addRootObject(&instrumented);
+        EXPECT_EQ(sizeof(Instrumented) + sizeof(NotInstrumented), impl.reportedSizeForAllTypes());
+        EXPECT_EQ(2, visitedObjects.size());
+    }
+    {
+        VisitedObjects visitedObjects;
+        MemoryInstrumentationImpl impl(visitedObjects);
+        Instrumented instrumented;
+        impl.addRootObject(instrumented);
+        EXPECT_EQ(sizeof(NotInstrumented), impl.reportedSizeForAllTypes());
+        EXPECT_EQ(1, visitedObjects.size());
+    }
+}
+
+TEST(MemoryInstrumentationTest, ownPtr)
+{
+    VisitedObjects visitedObjects;
+    MemoryInstrumentationImpl impl(visitedObjects);
+    OwnPtr<Instrumented> instrumented(adoptPtr(new Instrumented));
+    impl.addRootObject(instrumented);
+    EXPECT_EQ(sizeof(Instrumented) + sizeof(NotInstrumented), impl.reportedSizeForAllTypes());
+    EXPECT_EQ(2, visitedObjects.size());
+}
+
+class InstrumentedRefPtr : public RefCounted<InstrumentedRefPtr> {
+public:
+    InstrumentedRefPtr() : m_notInstrumented(new NotInstrumented) { }
+    virtual ~InstrumentedRefPtr() { delete m_notInstrumented; }
+    static PassRefPtr<InstrumentedRefPtr> create() { return adoptRef(new InstrumentedRefPtr()); }
+
+    virtual void reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
+    {
+        MemoryClassInfo info(memoryObjectInfo, this, MemoryInstrumentation::DOM);
+        info.addMember(m_notInstrumented);
+    }
+    NotInstrumented* m_notInstrumented;
+};
+
+TEST(MemoryInstrumentationTest, dataRef)
+{
+    VisitedObjects visitedObjects;
+    MemoryInstrumentationImpl impl(visitedObjects);
+    DataRef<InstrumentedRefPtr> instrumentedRefPtr;
+    instrumentedRefPtr.init();
+    impl.addRootObject(instrumentedRefPtr);
+    EXPECT_EQ(sizeof(InstrumentedRefPtr) + sizeof(NotInstrumented), impl.reportedSizeForAllTypes());
+    EXPECT_EQ(2, visitedObjects.size());
+}
+
+TEST(MemoryInstrumentationTest, refPtr)
+{
+    VisitedObjects visitedObjects;
+    MemoryInstrumentationImpl impl(visitedObjects);
+    RefPtr<InstrumentedRefPtr> instrumentedRefPtr(adoptRef(new InstrumentedRefPtr));
+    impl.addRootObject(instrumentedRefPtr);
+    EXPECT_EQ(sizeof(InstrumentedRefPtr) + sizeof(NotInstrumented), impl.reportedSizeForAllTypes());
+    EXPECT_EQ(2, visitedObjects.size());
+}
+
+class InstrumentedWithOwnPtr : public Instrumented {
+public:
+    InstrumentedWithOwnPtr() : m_notInstrumentedOwnPtr(adoptPtr(new NotInstrumented)) { }
+
+    virtual void reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
+    {
+        MemoryClassInfo info(memoryObjectInfo, this, MemoryInstrumentation::CSS);
+        Instrumented::reportMemoryUsage(memoryObjectInfo);
+        info.addMember(m_notInstrumentedOwnPtr);
+    }
+    OwnPtr<NotInstrumented> m_notInstrumentedOwnPtr;
+};
+
+TEST(MemoryInstrumentationTest, ownPtrNotInstrumented)
+{
+    VisitedObjects visitedObjects;
+    MemoryInstrumentationImpl impl(visitedObjects);
+    InstrumentedWithOwnPtr instrumentedWithOwnPtr;
+    impl.addRootObject(instrumentedWithOwnPtr);
+    EXPECT_EQ(2 * sizeof(NotInstrumented), impl.reportedSizeForAllTypes());
+    EXPECT_EQ(2, visitedObjects.size());
+}
+
+class InstrumentedOther {
+public:
+    InstrumentedOther() : m_data(0) { }
+
+    void reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
+    {
+        MemoryClassInfo info(memoryObjectInfo, this, MemoryInstrumentation::Other);
+    }
+    int m_data;
+};
+
+class InstrumentedDOM {
+public:
+    InstrumentedDOM() : m_instrumentedOther(adoptPtr(new InstrumentedOther)) { }
+
+    void reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
+    {
+        MemoryClassInfo info(memoryObjectInfo, this, MemoryInstrumentation::DOM);
+        info.addInstrumentedMember(m_instrumentedOther);
+    }
+    OwnPtr<InstrumentedOther> m_instrumentedOther;
+};
+
+TEST(MemoryInstrumentationTest, ownerTypePropagation)
+{
+    VisitedObjects visitedObjects;
+    MemoryInstrumentationImpl impl(visitedObjects);
+    OwnPtr<InstrumentedDOM> instrumentedDOM(adoptPtr(new InstrumentedDOM));
+    impl.addRootObject(instrumentedDOM);
+    EXPECT_EQ(sizeof(InstrumentedDOM) + sizeof(InstrumentedOther), impl.reportedSizeForAllTypes());
+    EXPECT_EQ(sizeof(InstrumentedDOM) + sizeof(InstrumentedOther), impl.totalSize(MemoryInstrumentation::DOM));
+    EXPECT_EQ(2, visitedObjects.size());
+}
+
+class NonVirtualInstrumented {
+public:
+    void reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
+    {
+        MemoryClassInfo info(memoryObjectInfo, this, MemoryInstrumentation::DOM);
+        info.addInstrumentedMember(m_instrumented);
+    }
+
+    Instrumented m_instrumented;
+};
+
+TEST(MemoryInstrumentationTest, visitFirstMemberInNonVirtualClass)
+{
+    VisitedObjects visitedObjects;
+    MemoryInstrumentationImpl impl(visitedObjects);
+    NonVirtualInstrumented nonVirtualInstrumented;
+    impl.addRootObject(&nonVirtualInstrumented);
+    EXPECT_EQ(sizeof(NonVirtualInstrumented) + sizeof(NotInstrumented), impl.reportedSizeForAllTypes());
+    EXPECT_EQ(2, visitedObjects.size());
+}
+
+} // namespace
+