Update from chromium https://crrev.com/301725/

cc/resources/picture_layer_tiling_set_unittest.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/resources/picture_layer_tiling_set.h"
 
 #include <map>
 #include <vector>
 
 #include "cc/resources/resource_provider.h"
@@ skipping 336 matching lines @@
     if (target_->num_tilings() > 0) {
       float last_scale = target_->tiling_at(0)->contents_scale();
       for (size_t i = 1; i < target_->num_tilings(); ++i) {
         const PictureLayerTiling* target_tiling = target_->tiling_at(i);
         EXPECT_LT(target_tiling->contents_scale(), last_scale);
         last_scale = target_tiling->contents_scale();
       }
     }
 
     for (size_t i = 0; i < target_->num_tilings(); ++i)
-      ValidateTiling(target_->tiling_at(i), target_client_.GetPile());
+      ValidateTiling(target_->tiling_at(i), target_client_.GetRasterSource());
   }
 
   void ValidateTiling(const PictureLayerTiling* tiling,
-                      const PicturePileImpl* pile) {
+                      const RasterSource* raster_source) {
     if (tiling->tiling_size().IsEmpty()) {
       EXPECT_TRUE(tiling->live_tiles_rect().IsEmpty());
     } else if (!tiling->live_tiles_rect().IsEmpty()) {
       gfx::Rect tiling_rect(tiling->tiling_size());
       EXPECT_TRUE(tiling_rect.Contains(tiling->live_tiles_rect()));
     }
 
     std::vector<Tile*> tiles = tiling->AllTilesForTesting();
     for (size_t i = 0; i < tiles.size(); ++i) {
       const Tile* tile = tiles[i];
       ASSERT_TRUE(!!tile);
-      EXPECT_EQ(tile->picture_pile(), pile);
+      EXPECT_EQ(tile->raster_source(), raster_source);
       EXPECT_TRUE(tile->content_rect().Intersects(tiling->live_tiles_rect()))
           << "All tiles must be inside the live tiles rect."
           << " Tile rect: " << tile->content_rect().ToString()
           << " Live rect: " << tiling->live_tiles_rect().ToString()
           << " Scale: " << tiling->contents_scale();
     }
 
     for (PictureLayerTiling::CoverageIterator iter(
              tiling, tiling->contents_scale(), tiling->live_tiles_rect());
          iter;
@@ skipping 169 matching lines @@
   std::vector<Tile*> new_tiles = target_->tiling_at(0)->AllTilesForTesting();
   for (size_t i = 0; i < original_tiles.size(); ++i) {
     std::vector<Tile*>::iterator find =
         std::find(new_tiles.begin(), new_tiles.end(), original_tiles[i]);
     EXPECT_TRUE(find == new_tiles.end());
   }
 }
 
 }  // namespace
 }  // namespace cc