use SkColorType instead of (deprecated) SkBitmap::Config for copyTo

cc/layers/nine_patch_layer_unittest.cc

Index: cc/layers/nine_patch_layer_unittest.cc
diff --git a/cc/layers/nine_patch_layer_unittest.cc b/cc/layers/nine_patch_layer_unittest.cc
index 1f93b4c19e3204cef59945883bc9ddfd9f427542..1a071d7915d5b72b3f12eacb9d884d29ef01d453 100644
--- a/cc/layers/nine_patch_layer_unittest.cc
+++ b/cc/layers/nine_patch_layer_unittest.cc
@@ -63,13 +63,8 @@ TEST_F(NinePatchLayerTest, SetLayerProperties) {
 
   EXPECT_FALSE(test_layer->DrawsContent());
 
-  SkBitmap bitmap;
-  bitmap.setConfig(SkBitmap::kARGB_8888_Config, 10, 10);
-  bitmap.allocPixels();
-  bitmap.setImmutable();
-
   scoped_ptr<ScopedUIResource> resource = ScopedUIResource::Create(
-      layer_tree_host_.get(), UIResourceBitmap(bitmap));
+      layer_tree_host_.get(), UIResourceBitmap(10, 10));
   gfx::Rect aperture(5, 5, 1, 1);
   bool fill_center = true;
   test_layer->SetAperture(aperture);