[ios clean] Toolbar accessibility and showcase egtests

ios/showcase/toolbar/BUILD.gn

Index: ios/showcase/toolbar/BUILD.gn
diff --git a/ios/showcase/toolbar/BUILD.gn b/ios/showcase/toolbar/BUILD.gn
index 223a3d11bca5763823758fbf524739296ecdd879..c007f41ccebc8cbcc7abeae9e347107bdffa1d82 100644
--- a/ios/showcase/toolbar/BUILD.gn
+++ b/ios/showcase/toolbar/BUILD.gn
@@ -15,3 +15,20 @@ source_set("toolbar") {
   libs = [ "UIKit.framework" ]
   configs += [ "//build/config/compiler:enable_arc" ]
 }
+
+source_set("eg_tests") {
+  testonly = true
+  sources = [
+    "sc_toolbar_egtest.mm",
+  ]
+  deps = [
+    "//components/strings",
+    "//ios/chrome/app/strings",
+    "//ios/chrome/browser/ui",
+    "//ios/chrome/test/earl_grey:test_support",
+    "//ios/showcase/test",
+    "//ios/third_party/earl_grey",
+    "//ui/base",
+  ]
+  configs += [ "//build/config/compiler:enable_arc" ]
+}