[iOS][eg2] Create test module for ios showcase EG2 tests.

This module does not have actual tests yet.

Notable changes:
 - add ios_showcase_g2tests_module module
 - add ios_showcase_eg2tests_module to
   ios/chrome/test/earl_grey2:all_tests target

This CL follows the same pattern as https://crrev.com/c/1628171

Bug: 866147
Change-Id: I88a311ec1c2e26078977c59345323152a7ea7adf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1892956Reviewed-by: Mark Cogan <marq@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Eugene But <eugenebut@chromium.org>
Auto-Submit: Nazerke Kalidolda <nazerke@google.com>
Cr-Commit-Position: refs/heads/master@{#712167}

ios/chrome/test/earl_grey2/BUILD.gn

@@ -16,6 +16,7 @@ group("all_tests") {
     ":ios_chrome_smoke_eg2tests_module",
     ":ios_chrome_ui_eg2tests_module",
     ":ios_chrome_web_eg2tests_module",
+    ":ios_showcase_core_eg2tests_module",
   ]
 }
 
@@ -98,6 +99,14 @@ chrome_ios_eg2_test("ios_chrome_web_eg2tests_module") {
   ]
 }
 
+chrome_ios_eg2_test("ios_showcase_core_eg2tests_module") {
+  xcode_test_application_name = "ios_chrome_eg2tests"
+
+  deps = [
+    "//ios/showcase/core:eg2_tests",
+  ]
+}
+
 source_set("eg2_tests") {
   defines = [ "CHROME_EARL_GREY_2" ]
   configs += [

ios/showcase/core/BUILD.gn

@@ -76,3 +76,19 @@ source_set("eg_tests") {
   ]
   configs += [ "//build/config/compiler:enable_arc" ]
 }
+
+source_set("eg2_tests") {
+  defines = [ "CHROME_EARL_GREY_2" ]
+  configs += [
+    "//build/config/compiler:enable_arc",
+    "//build/config/ios:xctest_config",
+  ]
+  testonly = true
+  sources = []
+  deps = [
+    "//ios/chrome/test/earl_grey:eg_test_support+eg2",
+    "//ios/testing/earl_grey:eg_test_support+eg2",
+    "//ios/third_party/earl_grey2:test_lib",
+  ]
+  libs = [ "UIKit.framework" ]
+}