Download driver for components/download.

components/download/internal/BUILD.gn

Index: components/download/internal/BUILD.gn
diff --git a/components/download/internal/BUILD.gn b/components/download/internal/BUILD.gn
index 1eda30feff52664ddc4344890b02f298c53dadd5..7c4e51788732b3e322560b8b89f28342137d2787 100644
--- a/components/download/internal/BUILD.gn
+++ b/components/download/internal/BUILD.gn
@@ -11,11 +11,14 @@ static_library("internal") {
   visibility = [
     ":*",
     "//components/download",
+    "//components/download/content",
+    "//components/download/internal/test:test_support",
   ]
 
   sources = [
     "config.cc",
     "config.h",
+    "download_driver.h",
     "download_service_impl.cc",
     "download_service_impl.h",
     "scheduler/battery_listener.cc",
@@ -45,6 +48,7 @@ source_set("unit_tests") {
   deps = [
     ":internal",
     "//base/test:test_support",
+    "//components/download/internal/test:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]