Add more components unittests to the GN build.

components/component_updater/BUILD.gn

Index: components/component_updater/BUILD.gn
diff --git a/components/component_updater/BUILD.gn b/components/component_updater/BUILD.gn
index c6930881c640dcf3c833951785aaa511f2bfa3a0..e8f6b7daca678529b2c60db12775a677092e038b 100644
--- a/components/component_updater/BUILD.gn
+++ b/components/component_updater/BUILD.gn
@@ -50,10 +50,11 @@ source_set("component_updater") {
     "//third_party/zlib:zip",
     "//net",
     "//ui/base",
+    "//url",
   ]
 }
 
-static_library("test_support") {
+source_set("test_support") {
   testonly = true
   sources = [
     "test/test_configurator.cc",
@@ -66,8 +67,11 @@ static_library("test_support") {
 
   deps = [
     ":component_updater",
+    "//base",
+    "//net:test_support",
     "//testing/gtest",
     "//testing/gmock",
+    "//url",
   ]
 }
 
@@ -85,6 +89,9 @@ source_set("unit_tests") {
   deps = [
     ":component_updater",
     ":test_support",
+    "//base",
+    "//courgette:courgette_lib",
+    "//net:test_support",
     "//testing/gtest",
     "//testing/gmock",
     "//third_party/libxml",