Remove the CompositedLayerMappingPtr smart ptr.

Source/web/tests/ScrollingCoordinatorChromiumTest.cpp

Index: Source/web/tests/ScrollingCoordinatorChromiumTest.cpp
diff --git a/Source/web/tests/ScrollingCoordinatorChromiumTest.cpp b/Source/web/tests/ScrollingCoordinatorChromiumTest.cpp
index 5206de08420e8c64886cb7bad4ed53424d958747..76975e60b1303bad1dd9aacb2eee7064ffa8fc65 100644
--- a/Source/web/tests/ScrollingCoordinatorChromiumTest.cpp
+++ b/Source/web/tests/ScrollingCoordinatorChromiumTest.cpp
@@ -139,7 +139,7 @@ static WebLayer* webLayerFromElement(Element* element)
         return 0;
     if (!layer->hasCompositedLayerMapping())
         return 0;
-    CompositedLayerMappingPtr compositedLayerMapping = layer->compositedLayerMapping();
+    CompositedLayerMapping* compositedLayerMapping = layer->compositedLayerMapping();
     GraphicsLayer* graphicsLayer = compositedLayerMapping->mainGraphicsLayer();
     if (!graphicsLayer)
         return 0;
@@ -291,7 +291,7 @@ TEST_F(ScrollingCoordinatorChromiumTest, overflowScrolling)
     ASSERT_TRUE(box->usesCompositedScrolling());
     ASSERT_EQ(PaintsIntoOwnBacking, box->layer()->compositingState());
 
-    CompositedLayerMappingPtr compositedLayerMapping = box->layer()->compositedLayerMapping();
+    CompositedLayerMapping* compositedLayerMapping = box->layer()->compositedLayerMapping();
     ASSERT_TRUE(compositedLayerMapping->hasScrollingLayer());
     ASSERT(compositedLayerMapping->scrollingContentsLayer());
 
@@ -331,7 +331,7 @@ TEST_F(ScrollingCoordinatorChromiumTest, overflowHidden)
     ASSERT_TRUE(box->usesCompositedScrolling());
     ASSERT_EQ(PaintsIntoOwnBacking, box->layer()->compositingState());
 
-    CompositedLayerMappingPtr compositedLayerMapping = box->layer()->compositedLayerMapping();
+    CompositedLayerMapping* compositedLayerMapping = box->layer()->compositedLayerMapping();
     ASSERT_TRUE(compositedLayerMapping->hasScrollingLayer());
     ASSERT(compositedLayerMapping->scrollingContentsLayer());