Add wrapper container for a vector of OwnPtr<T>

cc/CCLayerTreeHost.h

Index: cc/CCLayerTreeHost.h
diff --git a/cc/CCLayerTreeHost.h b/cc/CCLayerTreeHost.h
index 4224c70612a687d5f84a37688c3bacaf1e368e94..5f3c3e5e5ee82df747f093947c0b77e5714a346e 100644
--- a/cc/CCLayerTreeHost.h
+++ b/cc/CCLayerTreeHost.h
@@ -16,6 +16,7 @@
 #include "IntRect.h"
 #include "RateLimiter.h"
 #include "SkColor.h"
+#include "cc/own_ptr_vector.h"
 #include <limits>
 #include <wtf/HashMap.h>
 #include <wtf/OwnPtr.h>
@@ -235,7 +236,6 @@ protected:
 
 private:
     typedef Vector<RefPtr<LayerChromium> > LayerList;
-    typedef Vector<OwnPtr<CCPrioritizedTexture> > TextureList;
 
     void initializeRenderer();
 
@@ -293,6 +293,7 @@ private:
     SkColor m_backgroundColor;
     bool m_hasTransparentBackground;
 
+    typedef OwnPtrVector<CCPrioritizedTexture> TextureList;
     TextureList m_deleteTextureAfterCommitList;
     size_t m_partialTextureUpdateRequests;