cc: Plumb device color space through to rasterization

cc/test/fake_tile_manager_client.h

Index: cc/test/fake_tile_manager_client.h
diff --git a/cc/test/fake_tile_manager_client.h b/cc/test/fake_tile_manager_client.h
index 6c93c3771df7a268eb3f610eabe736b4a09e01bb..8f08eec59e0c6fb7787b4c575d008a8f20fc282b 100644
--- a/cc/test/fake_tile_manager_client.h
+++ b/cc/test/fake_tile_manager_client.h
@@ -27,6 +27,7 @@ class FakeTileManagerClient : public TileManagerClient {
   std::unique_ptr<EvictionTilePriorityQueue> BuildEvictionQueue(
       TreePriority tree_priority) override;
   void SetIsLikelyToRequireADraw(bool is_likely_to_require_a_draw) override {}
+  gfx::ColorSpace GetTileColorSpace() const override;
 };
 
 }  // namespace cc