Download driver for components/download.

components/download/internal/test/BUILD.gn

Index: components/download/internal/test/BUILD.gn
diff --git a/components/download/internal/test/BUILD.gn b/components/download/internal/test/BUILD.gn
index cabd4eee2d076b72ad3614b701f148f778bdb8b3..87032dcfd7d4da0cd0cfd509d74c569af74a8a47 100644
--- a/components/download/internal/test/BUILD.gn
+++ b/components/download/internal/test/BUILD.gn
@@ -12,6 +12,8 @@ source_set("test_support") {
     "entry_utils.h",
     "mock_model_client.cc",
     "mock_model_client.h",
+    "test_download_driver.cc",
+    "test_download_driver.h",
     "test_store.cc",
     "test_store.h",
   ]
@@ -19,6 +21,7 @@ source_set("test_support") {
   public_deps = [
     "//base",
     "//components/download/internal",
+    "//components/download/public",
     "//testing/gmock",
   ]
 }