Pass accurate contentsScale to LayerImpl.

cc/delegated_renderer_layer_impl_unittest.cc

Index: cc/delegated_renderer_layer_impl_unittest.cc
diff --git a/cc/delegated_renderer_layer_impl_unittest.cc b/cc/delegated_renderer_layer_impl_unittest.cc
index c8ecda0c2220314dcbf665681402cb9e14a24336..a0ed8ef0aa9034848279cde3f281b0523d9649dc 100644
--- a/cc/delegated_renderer_layer_impl_unittest.cc
+++ b/cc/delegated_renderer_layer_impl_unittest.cc
@@ -110,19 +110,16 @@ public:
 
         layerBefore->setPosition(IntPoint(20, 20));
         layerBefore->setBounds(IntSize(14, 14));
-        layerBefore->setContentBounds(IntSize(14, 14));
         layerBefore->setDrawsContent(true);
         layerBefore->setForceRenderSurface(true);
 
         layerAfter->setPosition(IntPoint(5, 5));
         layerAfter->setBounds(IntSize(15, 15));
-        layerAfter->setContentBounds(IntSize(15, 15));
         layerAfter->setDrawsContent(true);
         layerAfter->setForceRenderSurface(true);
 
         delegatedRendererLayer->setPosition(IntPoint(3, 3));
         delegatedRendererLayer->setBounds(IntSize(10, 10));
-        delegatedRendererLayer->setContentBounds(IntSize(10, 10));
         delegatedRendererLayer->setDrawsContent(true);
         WebTransformationMatrix transform;
         transform.translate(1, 1);
@@ -391,7 +388,6 @@ public:
 
         delegatedRendererLayer->setPosition(IntPoint(20, 20));
         delegatedRendererLayer->setBounds(IntSize(20, 20));
-        delegatedRendererLayer->setContentBounds(IntSize(20, 20));
         delegatedRendererLayer->setDrawsContent(true);
         WebTransformationMatrix transform;
         transform.translate(10, 10);