cc: Move LayerEvictionTileIterator to a separate file and make it a queue

cc/resources/picture_layer_tiling_unittest.cc

Index: cc/resources/picture_layer_tiling_unittest.cc
diff --git a/cc/resources/picture_layer_tiling_unittest.cc b/cc/resources/picture_layer_tiling_unittest.cc
index b982dc195f2d41b334873a79d50a0bd12e35fedb..9190b98e48dd5e4662adfbd0ce5b256fb45ac5f0 100644
--- a/cc/resources/picture_layer_tiling_unittest.cc
+++ b/cc/resources/picture_layer_tiling_unittest.cc
@@ -1247,102 +1247,6 @@ static void TileExists(bool exists, Tile* tile,
   EXPECT_EQ(exists, tile != NULL) << geometry_rect.ToString();
 }
 
-TEST(PictureLayerTilingTest, TilingEvictionTileIteratorStaticViewport) {
-  FakeOutputSurfaceClient output_surface_client;
-  scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d();
-  CHECK(output_surface->BindToClient(&output_surface_client));
-  TestSharedBitmapManager shared_bitmap_manager;
-  scoped_ptr<ResourceProvider> resource_provider = ResourceProvider::Create(
-      output_surface.get(), &shared_bitmap_manager, NULL, NULL, 0, false, 1);
-
-  FakePictureLayerTilingClient client(resource_provider.get());
-  scoped_ptr<TestablePictureLayerTiling> tiling;
-
-  gfx::Rect viewport(50, 50, 100, 100);
-  gfx::Size layer_bounds(2000, 2000);
-
-  client.SetTileSize(gfx::Size(30, 30));
-  client.set_tree(ACTIVE_TREE);
-
-  tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client);
-  tiling->ComputeTilePriorityRects(viewport, 1.0f, 1.0, Occlusion());
-  tiling->UpdateAllTilePrioritiesForTesting();
-
-  PictureLayerTiling::TilingRasterTileIterator empty_iterator;
-  EXPECT_FALSE(empty_iterator);
-
-  std::vector<Tile*> all_tiles = tiling->AllTilesForTesting();
-
-  PictureLayerTiling::TilingEvictionTileIterator it(
-      tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::NOW);
-
-  // Tiles don't have resources to evict.
-  EXPECT_FALSE(it);
-
-  // Sanity check.
-  EXPECT_EQ(5184u, all_tiles.size());
-
-  client.tile_manager()->InitializeTilesWithResourcesForTesting(all_tiles);
-
-  std::set<Tile*> all_tiles_set(all_tiles.begin(), all_tiles.end());
-
-  std::set<Tile*> eviction_tiles;
-
-  it = PictureLayerTiling::TilingEvictionTileIterator(
-      tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::EVENTUALLY);
-  EXPECT_TRUE(it);
-  for (; it; ++it) {
-    Tile* tile = *it;
-    EXPECT_TRUE(tile);
-    EXPECT_EQ(TilePriority::EVENTUALLY,
-              tile->priority(ACTIVE_TREE).priority_bin);
-    EXPECT_FALSE(tile->required_for_activation());
-    eviction_tiles.insert(tile);
-  }
-
-  it = PictureLayerTiling::TilingEvictionTileIterator(
-      tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::SOON);
-  EXPECT_TRUE(it);
-  for (; it; ++it) {
-    Tile* tile = *it;
-    EXPECT_TRUE(tile);
-    EXPECT_EQ(TilePriority::SOON, tile->priority(ACTIVE_TREE).priority_bin);
-    EXPECT_FALSE(tile->required_for_activation());
-    eviction_tiles.insert(tile);
-  }
-
-  it = PictureLayerTiling::TilingEvictionTileIterator(
-      tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::NOW);
-  EXPECT_TRUE(it);
-  for (; it; ++it) {
-    Tile* tile = *it;
-    EXPECT_TRUE(tile);
-    EXPECT_EQ(TilePriority::NOW, tile->priority(ACTIVE_TREE).priority_bin);
-    EXPECT_FALSE(tile->required_for_activation());
-    eviction_tiles.insert(tile);
-  }
-
-  it = PictureLayerTiling::TilingEvictionTileIterator(
-      tiling.get(),
-      SMOOTHNESS_TAKES_PRIORITY,
-      PictureLayerTiling::NOW_AND_REQUIRED_FOR_ACTIVATION);
-  EXPECT_FALSE(it);
-
-  EXPECT_GT(all_tiles_set.size(), 0u);
-  EXPECT_EQ(all_tiles_set, eviction_tiles);
-
-  EXPECT_TRUE(tiling->eviction_tiles_cache_valid());
-  tiling->RemoveTileAt(0, 0, nullptr);
-  EXPECT_FALSE(tiling->eviction_tiles_cache_valid());
-
-  it = PictureLayerTiling::TilingEvictionTileIterator(
-      tiling.get(), SMOOTHNESS_TAKES_PRIORITY,
-      PictureLayerTiling::NOW_AND_REQUIRED_FOR_ACTIVATION);
-  EXPECT_TRUE(tiling->eviction_tiles_cache_valid());
-  tiling->Reset();
-  EXPECT_FALSE(tiling->eviction_tiles_cache_valid());
-}
-
 TEST_F(PictureLayerTilingIteratorTest, TilesExist) {
   gfx::Size layer_bounds(1099, 801);
   Initialize(gfx::Size(100, 100), 1.f, layer_bounds);