Oilpan: Move ChromeClient classes into Oilpan heap.

Source/core/layout/LayoutTestHelper.cpp

Index: Source/core/layout/LayoutTestHelper.cpp
diff --git a/Source/core/layout/LayoutTestHelper.cpp b/Source/core/layout/LayoutTestHelper.cpp
index 2b980dcabff05bd9eabf7a9f0789fc703f516e1f..85a3b51617e50ea4537afec7a5ae0592acf7eda2 100644
--- a/Source/core/layout/LayoutTestHelper.cpp
+++ b/Source/core/layout/LayoutTestHelper.cpp
@@ -21,6 +21,8 @@ public:
 
 class FakeChromeClient : public EmptyChromeClient {
 public:
+    static PassOwnPtrWillBeRawPtr<FakeChromeClient> create() { return adoptPtrWillBeNoop(new FakeChromeClient); }
+
     virtual GraphicsLayerFactory* graphicsLayerFactory() const
     {
         static FakeGraphicsLayerFactory* factory = adoptPtr(new FakeGraphicsLayerFactory).leakPtr();
@@ -31,7 +33,7 @@ public:
 void RenderingTest::SetUp()
 {
     fillWithEmptyClients(m_pageClients);
-    static FakeChromeClient* chromeClient = adoptPtr(new FakeChromeClient).leakPtr();
+    static FakeChromeClient* chromeClient = FakeChromeClient::create().leakPtr();
     m_pageClients.chromeClient = chromeClient;
     m_pageHolder = DummyPageHolder::create(IntSize(800, 600), &m_pageClients);