[Mac/GN] Start running components_unittests, components_browsertests, and unit_tests.

components/BUILD.gn

Index: components/BUILD.gn
diff --git a/components/BUILD.gn b/components/BUILD.gn
index e1543c112671f98d96070b35394118b843509b4f..5c8387e446d35453d40bba6c38558b76189e18b9 100644
--- a/components/BUILD.gn
+++ b/components/BUILD.gn
@@ -15,7 +15,7 @@ if (is_ios) {
   import("//ios/build/config.gni")
 }
 
-if (is_ios || is_mac) {
+if (is_ios) {
   bundle_data("components_tests_pak_bundle_data") {
     public_deps = [
       ":components_tests_pak",
@@ -210,10 +210,14 @@ test("components_unittests") {
     ]
   }  # iOS/!iOS
 
-  if (is_ios || is_mac) {
+  if (is_ios) {
     deps += [ ":components_tests_pak_bundle_data" ]
   }
 
+  if (is_mac) {
+    data_deps += [ "//content/shell:pak" ]
+  }
+
   if (is_android) {
     deps += [
       "//components/gcm_driver/instance_id:test_support",
@@ -421,6 +425,7 @@ if (!is_ios) {
     ]
 
     if (is_mac) {
+      data_deps += [ "//content/shell:content_shell" ]
       data += [ "$root_out_dir/Content Shell.app/" ]
     }