cc: Remove tile ref counting in tile manager.

cc/test/fake_tile_manager.cc

Index: cc/test/fake_tile_manager.cc
diff --git a/cc/test/fake_tile_manager.cc b/cc/test/fake_tile_manager.cc
index 7afda91f7b9fdc0f0daad9abe5eea86b3a7da4bb..908f42f83216a81f844c2271a7b0d8c7cab9df73 100644
--- a/cc/test/fake_tile_manager.cc
+++ b/cc/test/fake_tile_manager.cc
@@ -39,13 +39,21 @@ FakeTileManager::FakeTileManager(TileManagerClient* client,
                   resource_provider->best_texture_format()) {}
 
 void FakeTileManager::ReassignMemoryToOOMTilesRequiredForActivation() {
-  ReassignGpuMemoryToOOMTilesRequiredForActivation();
+  ReassignGpuMemoryToOOMTilesRequiredForActivation(&tiles_for_raster);
+}
+
+void FakeTileManager::AssignMemoryToTiles() {
+  tiles_for_raster.clear();
+
+  AssignBinsToTiles();
+  SortTiles();
+  AssignGpuMemoryToTiles(&tiles_for_raster);
 }
 
 bool FakeTileManager::HasBeenAssignedMemory(Tile* tile) {
-  return std::find(tiles_that_need_to_be_rasterized().begin(),
-                   tiles_that_need_to_be_rasterized().end(),
-                   tile) != tiles_that_need_to_be_rasterized().end();
+  return std::find(tiles_for_raster.begin(),
+                   tiles_for_raster.end(),
+                   tile) != tiles_for_raster.end();
 }
 
 }  // namespace cc