Pass accurate contentsScale to LayerImpl.

cc/layer_sorter_unittest.cc

Index: cc/layer_sorter_unittest.cc
diff --git a/cc/layer_sorter_unittest.cc b/cc/layer_sorter_unittest.cc
index 941bd725158d8daa57b8a1c9ab99f4e327b1e356..2cb4294e5abb51252b6a53bd54e27d98e8f444b0 100644
--- a/cc/layer_sorter_unittest.cc
+++ b/cc/layer_sorter_unittest.cc
@@ -215,27 +215,22 @@ TEST(LayerSorterTest, verifyExistingOrderingPreservedWhenNoZDiff)
     FrontMatrix.translate3d(0, 0, 1);
 
     layer1->setBounds(IntSize(10, 10));
-    layer1->setContentBounds(IntSize(10, 10));
     layer1->setDrawTransform(BehindMatrix);
     layer1->setDrawsContent(true);
 
     layer2->setBounds(IntSize(20, 20));
-    layer2->setContentBounds(IntSize(20, 20));
     layer2->setDrawTransform(BehindMatrix);
     layer2->setDrawsContent(true);
 
     layer3->setBounds(IntSize(30, 30));
-    layer3->setContentBounds(IntSize(30, 30));
     layer3->setDrawTransform(FrontMatrix);
     layer3->setDrawsContent(true);
 
     layer4->setBounds(IntSize(40, 40));
-    layer4->setContentBounds(IntSize(40, 40));
     layer4->setDrawTransform(FrontMatrix);
     layer4->setDrawsContent(true);
 
     layer5->setBounds(IntSize(50, 50));
-    layer5->setContentBounds(IntSize(50, 50));
     layer5->setDrawTransform(BehindMatrix);
     layer5->setDrawsContent(true);