Let AreVisibleResourcesReady return correct value for PictureImageLayerImpl

cc/layers/picture_layer_impl_unittest.cc

Index: cc/layers/picture_layer_impl_unittest.cc
diff --git a/cc/layers/picture_layer_impl_unittest.cc b/cc/layers/picture_layer_impl_unittest.cc
index 063b6327d79a027932ca5e92cf82c6a435793798..5a5d7891464b0d52197294bf32a34fd468663bc5 100644
--- a/cc/layers/picture_layer_impl_unittest.cc
+++ b/cc/layers/picture_layer_impl_unittest.cc
@@ -9,6 +9,7 @@
 #include "cc/test/fake_impl_proxy.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/fake_output_surface.h"
+#include "cc/test/impl_side_painting_settings.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkDevice.h"
@@ -53,13 +54,6 @@ class TestablePictureLayerImpl : public PictureLayerImpl {
   }
 };
 
-class ImplSidePaintingSettings : public LayerTreeSettings {
- public:
-  ImplSidePaintingSettings() {
-    impl_side_painting = true;
-  }
-};
-
 class TestablePicturePileImpl : public PicturePileImpl {
  public:
   static scoped_refptr<TestablePicturePileImpl> CreateFilledPile(