Determine a layer's IsAffectedByPageScale property without using Layer Tree

cc/layers/picture_image_layer_impl_unittest.cc

Index: cc/layers/picture_image_layer_impl_unittest.cc
diff --git a/cc/layers/picture_image_layer_impl_unittest.cc b/cc/layers/picture_image_layer_impl_unittest.cc
index 92e6926852aec2b17a72d6a4d8411b5bd1a34d77..53b0061b05ca85f4aafd45a2d3fceda8c72db687 100644
--- a/cc/layers/picture_image_layer_impl_unittest.cc
+++ b/cc/layers/picture_image_layer_impl_unittest.cc
@@ -108,10 +108,14 @@ TEST_F(PictureImageLayerImplTest, CalculateContentsScale) {
   scoped_ptr<TestablePictureImageLayerImpl> layer(CreateLayer(1, PENDING_TREE));
   layer->SetDrawsContent(true);
 
+  TestablePictureImageLayerImpl* layer_ptr = layer.get();
+  host_impl_.pending_tree()->SetRootLayer(std::move(layer));
+  host_impl_.pending_tree()->BuildPropertyTreesForTesting();
+
   gfx::Rect viewport(100, 200);
-  SetupDrawPropertiesAndUpdateTiles(
-      layer.get(), 2.f, 3.f, 4.f, 1.f, false, viewport);
-  EXPECT_FLOAT_EQ(1.f, layer->MaximumTilingContentsScale());
+  SetupDrawPropertiesAndUpdateTiles(layer_ptr, 2.f, 3.f, 4.f, 1.f, false,
+                                    viewport);
+  EXPECT_FLOAT_EQ(1.f, layer_ptr->MaximumTilingContentsScale());
 }
 
 TEST_F(PictureImageLayerImplTest, IgnoreIdealContentScale) {
@@ -121,6 +125,10 @@ TEST_F(PictureImageLayerImplTest, IgnoreIdealContentScale) {
 
   gfx::Rect viewport(100, 200);
 
+  TestablePictureImageLayerImpl* pending_layer_ptr = pending_layer.get();
+  host_impl_.pending_tree()->SetRootLayer(std::move(pending_layer));
+  host_impl_.pending_tree()->BuildPropertyTreesForTesting();
+
   // Set PictureLayerImpl::ideal_contents_scale_ to 2.f which is not equal
   // to the content scale used by PictureImageLayerImpl.
   const float suggested_ideal_contents_scale = 2.f;
@@ -128,17 +136,13 @@ TEST_F(PictureImageLayerImplTest, IgnoreIdealContentScale) {
   const float page_scale_factor = 4.f;
   const float maximum_animation_contents_scale = 1.f;
   const bool animating_transform_to_screen = false;
-  SetupDrawPropertiesAndUpdateTiles(pending_layer.get(),
-                                    suggested_ideal_contents_scale,
-                                    device_scale_factor,
-                                    page_scale_factor,
-                                    maximum_animation_contents_scale,
-                                    animating_transform_to_screen,
-                                    viewport);
-  EXPECT_EQ(1.f, pending_layer->tilings()->tiling_at(0)->contents_scale());
+  SetupDrawPropertiesAndUpdateTiles(
+      pending_layer_ptr, suggested_ideal_contents_scale, device_scale_factor,
+      page_scale_factor, maximum_animation_contents_scale,
+      animating_transform_to_screen, viewport);
+  EXPECT_EQ(1.f, pending_layer_ptr->tilings()->tiling_at(0)->contents_scale());
 
   // Push to active layer.
-  host_impl_.pending_tree()->SetRootLayer(std::move(pending_layer));
   host_impl_.ActivateSyncTree();
 
   TestablePictureImageLayerImpl* active_layer =