Add GCAPI to the GN build.

chrome/installer/util/BUILD.gn

Index: chrome/installer/util/BUILD.gn
diff --git a/chrome/installer/util/BUILD.gn b/chrome/installer/util/BUILD.gn
index 7b20c75525b48a26a084169b41f7e3fa33166ca7..f64186c3c914e3bb0f501e1dd19e1e151f01d397 100644
--- a/chrome/installer/util/BUILD.gn
+++ b/chrome/installer/util/BUILD.gn
@@ -10,7 +10,6 @@ static_library("util") {
     "//base",
     "//chrome:strings",
     "//chrome/common:constants",
-    "//chrome/common:result_codes",
     "//components/variations",
     "//content/public/common:result_codes",
   ]
@@ -58,8 +57,11 @@ static_library("util") {
       "user_experiment.cc",
       "user_experiment.h",
     ]
-    deps += [
+
+    public_deps = [
       ":strings",
+    ]
+    deps += [
       "//base/third_party/dynamic_annotations",
       "//components/metrics",
       "//courgette:courgette_lib",
@@ -206,7 +208,7 @@ action("generate_strings") {
 # Compile the generated .rc file.
 source_set("strings") {
   sources = get_target_outputs(":generate_strings")
-  deps = [
+  public_deps = [
     ":generate_strings",
   ]
 }
@@ -268,6 +270,7 @@ if (is_win) {
       "//base/test:test_support",
       "//chrome:other_version",
       "//chrome/common",
+      "//chrome/installer/setup:lib",
       "//chrome/installer/test:alternate_version_generator_lib",
       "//components/variations",
       "//content/public/common",