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diff --git a/WebKit/chromium/tests/PODArenaTest.cpp b/WebKit/chromium/tests/PODArenaTest.cpp
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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:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  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 APPLE AND ITS 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 APPLE OR ITS 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 "PODArena.h"
+
+#include "ArenaTestHelpers.h"
+#include <algorithm>
+#include <gtest/gtest.h>
+#include <wtf/FastMalloc.h>
+#include <wtf/RefPtr.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+using ArenaTestHelpers::TrackedAllocator;
+
+namespace {
+
+// A couple of simple structs to allocate.
+struct TestClass1 {
+    TestClass1()
+        : x(0), y(0), z(0), w(1) { }
+
+    float x, y, z, w;
+};
+
+struct TestClass2 {
+    TestClass2()
+        : a(1), b(2), c(3), d(4) { }
+
+    float a, b, c, d;
+};
+
+} // anonymous namespace
+
+class PODArenaTest : public testing::Test {
+};
+
+// Make sure the arena can successfully allocate from more than one
+// region.
+TEST_F(PODArenaTest, CanAllocateFromMoreThanOneRegion)
+{
+    RefPtr<TrackedAllocator> allocator = TrackedAllocator::create();
+    RefPtr<PODArena> arena = PODArena::create(allocator);
+    int numIterations = 10 * PODArena::DefaultChunkSize / sizeof(TestClass1);
+    for (int i = 0; i < numIterations; ++i)
+        arena->allocateObject<TestClass1>();
+    EXPECT_GT(allocator->numRegions(), 1);
+}
+
+// Make sure the arena frees all allocated regions during destruction.
+TEST_F(PODArenaTest, FreesAllAllocatedRegions)
+{
+    RefPtr<TrackedAllocator> allocator = TrackedAllocator::create();
+    {
+        RefPtr<PODArena> arena = PODArena::create(allocator);
+        for (int i = 0; i < 3; i++)
+            arena->allocateObject<TestClass1>();
+        EXPECT_GT(allocator->numRegions(), 0);
+    }
+    EXPECT_TRUE(allocator->isEmpty());
+}
+
+// Make sure the arena runs constructors of the objects allocated within.
+TEST_F(PODArenaTest, RunsConstructors)
+{
+    RefPtr<PODArena> arena = PODArena::create();
+    for (int i = 0; i < 10000; i++) {
+        TestClass1* tc1 = arena->allocateObject<TestClass1>();
+        EXPECT_EQ(0, tc1->x);
+        EXPECT_EQ(0, tc1->y);
+        EXPECT_EQ(0, tc1->z);
+        EXPECT_EQ(1, tc1->w);
+        TestClass2* tc2 = arena->allocateObject<TestClass2>();
+        EXPECT_EQ(1, tc2->a);
+        EXPECT_EQ(2, tc2->b);
+        EXPECT_EQ(3, tc2->c);
+        EXPECT_EQ(4, tc2->d);
+    }
+}
+
+} // namespace WebCore