Add ios/chrome/browser/ui/toolbar:eg2_tests test target.

This target does not include sources yet, because existing tests are
not EG2 compatible yet.

Bug: 922813
Change-Id: I75aac839686946eb73cc893ae3235ca7fed9ba48
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1642113
Auto-Submit: Eugene But <eugenebut@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#666242}

ios/chrome/browser/ui/toolbar/BUILD.gn

@@ -145,6 +145,22 @@ source_set("unit_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" ]
+}
+
 source_set("eg_tests") {
   configs += [ "//build/config/compiler:enable_arc" ]
   defines = [ "CHROME_EARL_GREY_1" ]

ios/chrome/test/earl_grey2/BUILD.gn

@@ -41,6 +41,7 @@ chrome_ios_eg2_test("ios_chrome_ui_eg2tests_module") {
   deps = [
     "//ios/chrome/browser/ui/activity_services:eg2_tests",
     "//ios/chrome/browser/ui/download:eg2_tests",
+    "//ios/chrome/browser/ui/toolbar:eg2_tests",
   ]
 }