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diff --git a/chromium/third_party/WebKit/Source/wtf/RawPtr.h b/chromium/third_party/WebKit/Source/wtf/RawPtr.h
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+++ b/chromium/third_party/WebKit/Source/wtf/RawPtr.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef WTF_RawPtr_h
+#define WTF_RawPtr_h
+
+#include <algorithm>
+#include <stdint.h>
+
+#include "wtf/HashTableDeletedValueType.h"
+
+// RawPtr is a simple wrapper for a raw pointer that provides the
+// interface (get, clear) of other pointer types such as RefPtr,
+// Persistent and Member. This is used for the Blink garbage
+// collection work in order to be able to write shared code that will
+// use reference counting or garbage collection based on a
+// compile-time flag.
+
+namespace WTF {
+
+template<typename T>
+class RawPtr {
+    WTF_DISALLOW_CONSTRUCTION_FROM_ZERO(RawPtr);
+    WTF_DISALLOW_ZERO_ASSIGNMENT(RawPtr);
+public:
+    RawPtr()
+    {
+#ifndef NDEBUG
+        m_ptr = reinterpret_cast<T*>(rawPtrZapValue);
+#endif
+    }
+    RawPtr(std::nullptr_t) : m_ptr(0) { }
+    RawPtr(T* ptr) : m_ptr(ptr) { }
+    explicit RawPtr(T& reference) : m_ptr(&reference) { }
+    RawPtr(const RawPtr& other)
+        : m_ptr(other.get())
+    {
+    }
+
+    template<typename U>
+    RawPtr(const RawPtr<U>& other)
+        : m_ptr(other.get())
+    {
+    }
+
+    // Hash table deleted values, which are only constructed and never copied or destroyed.
+    RawPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) { }
+    bool isHashTableDeletedValue() const { return m_ptr == hashTableDeletedValue(); }
+
+    T* get() const { return m_ptr; }
+    void clear() { m_ptr = 0; }
+    // FIXME: oilpan: Remove release and leakRef once we remove RefPtrWillBeRawPtr.
+    RawPtr<T> release()
+    {
+        RawPtr<T> tmp = m_ptr;
+        m_ptr = 0;
+        return tmp;
+    }
+    T* leakRef()
+    {
+        T* ptr = m_ptr;
+        m_ptr = 0;
+        return ptr;
+    }
+
+    template<typename U>
+    RawPtr& operator=(U* ptr)
+    {
+        m_ptr = ptr;
+        return *this;
+    }
+
+    template<typename U>
+    RawPtr& operator=(RawPtr<U> ptr)
+    {
+        m_ptr = ptr.get();
+        return *this;
+    }
+
+    RawPtr& operator=(std::nullptr_t)
+    {
+        m_ptr = 0;
+        return *this;
+    }
+
+    operator T*() const { return m_ptr; }
+    T& operator*() const { return *m_ptr; }
+    T* operator->() const { return m_ptr; }
+    bool operator!() const { return !m_ptr; }
+
+    void swap(RawPtr& o)
+    {
+        std::swap(m_ptr, o.m_ptr);
+    }
+
+    static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); }
+
+private:
+    static const uintptr_t rawPtrZapValue = 0x3a3a3a3a;
+    T* m_ptr;
+};
+
+template<typename T, typename U> inline RawPtr<T> static_pointer_cast(const RawPtr<U>& p)
+{
+    return RawPtr<T>(static_cast<T*>(p.get()));
+}
+
+template<typename T> inline T* getPtr(const RawPtr<T>& p)
+{
+    return p.get();
+}
+
+} // namespace WTF
+
+using WTF::RawPtr;
+
+#endif