[iOS][eg2] Convert prerender_egtest to EG2 target.

This CL adds a file to EG2 target and updates headers and adds eg2_test
source_set in build file.

Bug: 987646
Change-Id: Ia7e5b80e523d48d37b2552623529dc1e93fb0160
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1871693Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Robbie Gibson <rkgibson@google.com>
Commit-Queue: Nazerke Kalidolda <nazerke@google.com>
Auto-Submit: Nazerke Kalidolda <nazerke@google.com>
Cr-Commit-Position: refs/heads/master@{#708951}

ios/chrome/browser/prerender/BUILD.gn

@@ -63,18 +63,15 @@ source_set("unit_tests") {
   ]
 }
 source_set("eg_tests") {
+  defines = [ "CHROME_EARL_GREY_1" ]
   testonly = true
   sources = [
     "prerender_egtest.mm",
   ]
   deps = [
-    "//base",
-    "//ios/chrome/browser/ui/content_suggestions:content_suggestions_constant",
-    "//ios/chrome/browser/ui/omnibox:omnibox_internal",
-    "//ios/chrome/browser/ui/omnibox/popup:popup_ui",
-    "//ios/chrome/browser/ui/util",
     "//ios/chrome/test/app:test_support",
     "//ios/chrome/test/earl_grey:test_support",
+    "//ios/testing/earl_grey:earl_grey_support",
     "//ios/web/public/test/http_server",
   ]
   libs = [
@@ -83,3 +80,22 @@ 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 = [
+    "prerender_egtest.mm",
+  ]
+  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",
+    "//net:test_support",
+  ]
+  libs = [ "UIKit.framework" ]
+}

ios/chrome/browser/prerender/prerender_egtest.mm

@@ -2,17 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#import <EarlGrey/EarlGrey.h>
 #import <XCTest/XCTest.h>
+#import "ios/testing/earl_grey/earl_grey_test.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/sys_string_conversions.h"
 #import "base/test/ios/wait_util.h"
-#import "ios/chrome/browser/ui/content_suggestions/ntp_home_constant.h"
-#import "ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.h"
-#import "ios/chrome/browser/ui/omnibox/popup/omnibox_popup_truncating_label.h"
-#include "ios/chrome/browser/ui/util/ui_util.h"
 #import "ios/chrome/test/earl_grey/chrome_earl_grey.h"
 #import "ios/chrome/test/earl_grey/chrome_matchers.h"
 #import "ios/chrome/test/earl_grey/chrome_test_case.h"
@@ -110,18 +106,17 @@ std::unique_ptr<net::test_server::HttpResponse> StandardResponse(
   // Make sure the omnibox is autocompleted.
   [[EarlGrey
       selectElementWithMatcher:grey_allOf(grey_accessibilityLabel(pageString),
-                                          grey_ancestor(grey_kindOfClass(
-                                              [OmniboxTextFieldIOS class])),
+                                          grey_ancestor(grey_kindOfClassName(
+                                              @"OmniboxTextFieldIOS")),
                                           nil)]
       assertWithMatcher:grey_sufficientlyVisible()];
 
   // Open the suggestion. The suggestion needs to be the first suggestion to
   // have the prerenderer activated.
   [[EarlGrey
-      selectElementWithMatcher:grey_allOf(
-                                   grey_accessibilityLabel(pageString),
-                                   grey_kindOfClass(
-                                       [OmniboxPopupTruncatingLabel class]),
+      selectElementWithMatcher:grey_allOf(grey_accessibilityLabel(pageString),
+                                          grey_kindOfClassName(
+                                              @"OmniboxPopupTruncatingLabel"),
                                           grey_ancestor(grey_accessibilityID(
                                               @"omnibox suggestion 0")),
                                           grey_sufficientlyVisible(), nil)]

ios/chrome/test/earl_grey2/BUILD.gn

@@ -34,6 +34,7 @@ chrome_ios_eg2_test("ios_chrome_integration_eg2tests_module") {
 
   deps = [
     "//ios/chrome/browser/ntp_tiles:eg2_tests",
+    "//ios/chrome/browser/prerender:eg2_tests",
   ]
 }