Made download_manager_egtest.mm EG2 compatible.

This CL adds file to EG2 target and updated includes.
Other changes has been already landed in separate CLs.

Bug: 987646
Change-Id: I7b44b28d0d20a9bef24e7ec1aba5c78f27cba22b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1726412
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Auto-Submit: Eugene But <eugenebut@chromium.org>
Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#684269}

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

@@ -149,15 +149,19 @@ source_set("eg2_tests") {
 
   sources = [
     "ar_quick_look_egtest.mm",
+    "download_manager_egtest.mm",
     "pass_kit_egtest.mm",
   ]
 
   deps = [
     "//ios/chrome/app/strings:ios_strings_grit",
+    "//ios/chrome/browser:chrome_url_constants",
     "//ios/chrome/browser/download:features",
     "//ios/chrome/browser/download:mime_types",
     "//ios/chrome/browser/download:test_support",
+    "//ios/chrome/test:eg_test_support+eg2",
     "//ios/chrome/test/earl_grey:eg_test_support+eg2",
+    "//ios/testing:embedded_test_server_support",
     "//ios/testing/earl_grey:eg_test_support+eg2",
     "//ios/third_party/earl_grey2:test_lib",
     "//ios/web/public/test:element_selector",

ios/chrome/browser/ui/download/download_manager_egtest.mm

@@ -2,22 +2,18 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#import <EarlGrey/EarlGrey.h>
-
 #include "base/bind.h"
 #import "base/test/ios/wait_util.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 #include "ios/chrome/grit/ios_strings.h"
-#import "ios/chrome/test/app/chrome_test_util.h"
-#import "ios/chrome/test/app/tab_test_util.h"
 #import "ios/chrome/test/earl_grey/chrome_actions.h"
 #import "ios/chrome/test/earl_grey/chrome_earl_grey.h"
 #import "ios/chrome/test/earl_grey/chrome_earl_grey_ui.h"
 #import "ios/chrome/test/earl_grey/chrome_matchers.h"
 #import "ios/chrome/test/earl_grey/chrome_test_case.h"
 #import "ios/chrome/test/scoped_eg_synchronization_disabler.h"
+#import "ios/testing/earl_grey/earl_grey_test.h"
 #include "ios/testing/embedded_test_server_handlers.h"
-#import "ios/web/public/test/earl_grey/web_view_matchers.h"
 #include "ios/web/public/test/element_selector.h"
 #include "net/test/embedded_test_server/http_request.h"
 #include "net/test/embedded_test_server/http_response.h"