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diff --git a/Source/WebCore/platform/graphics/android/utils/LinearAllocator.h b/Source/WebCore/platform/graphics/android/utils/LinearAllocator.h
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+++ b/Source/WebCore/platform/graphics/android/utils/LinearAllocator.h
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+/*
+ * Copyright 2012, The Android Open Source Project
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``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 LinearAllocator_h
+#define LinearAllocator_h
+
+namespace WebCore {
+
+class LinearAllocator
+{
+public:
+    LinearAllocator();
+    ~LinearAllocator();
+
+    void* alloc(size_t size);
+    void rewindIfLastAlloc(void* ptr, size_t allocSize);
+
+    void dumpMemoryStats(const char* prefix = "");
+
+private:
+    LinearAllocator(const LinearAllocator& other);
+
+    class Page;
+
+    Page* newPage(size_t pageSize);
+    bool fitsInCurrentPage(size_t size);
+    void ensureNext(size_t size);
+    void* start(Page *p);
+    void* end(Page* p);
+
+    size_t m_pageSize;
+    size_t m_maxAllocSize;
+    void* m_next;
+    Page* m_currentPage;
+    Page* m_pages;
+
+    // Memory usage tracking
+    size_t m_totalAllocated;
+    size_t m_wastedSpace;
+    size_t m_pageCount;
+    size_t m_dedicatedPageCount;
+};
+
+} // namespace WebCore
+
+#endif // LinearAllocator_h