cc: Added tile bundles

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 48458d7cfe751f43aaa62e81b795462a4b300a32..88c584eeeaa5332506e363ae416ec06711084700 100644
--- a/cc/layers/picture_layer_impl_unittest.cc
+++ b/cc/layers/picture_layer_impl_unittest.cc
@@ -1089,7 +1089,6 @@ TEST_F(PictureLayerImplTest, MarkRequiredOffscreenTiles) {
        ++iter) {
     if (!*iter)
       continue;
-    Tile* tile = *iter;
     TilePriority priority;
     priority.resolution = HIGH_RESOLUTION;
     if (++tile_count % 2) {
@@ -1099,7 +1098,7 @@ TEST_F(PictureLayerImplTest, MarkRequiredOffscreenTiles) {
       priority.time_to_visible_in_seconds = 1.f;
       priority.distance_to_visible_in_pixels = 1.f;
     }
-    tile->SetPriority(PENDING_TREE, priority);
+    iter.SetPriorityForTesting(priority);
   }
 
   pending_layer_->MarkVisibleResourcesAsRequired();
@@ -1116,7 +1115,7 @@ TEST_F(PictureLayerImplTest, MarkRequiredOffscreenTiles) {
     if (!*iter)
       continue;
     const Tile* tile = *iter;
-    if (tile->priority(PENDING_TREE).distance_to_visible_in_pixels == 0.f) {
+    if (iter.priority().distance_to_visible_in_pixels == 0.f) {
       EXPECT_TRUE(tile->required_for_activation());
       num_visible++;
     } else {