Split up ios/web:test_support.

ios/chrome/browser/ui/fullscreen_egtest.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // 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 <UIKit/UIKit.h>
 #import <XCTest/XCTest.h>
 
 #include "base/ios/ios_util.h"
 #include "base/mac/bind_objc_block.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #import "ios/chrome/browser/ui/toolbar/toolbar_controller.h"
 #import "ios/chrome/test/app/chrome_test_util.h"
 #import "ios/chrome/test/app/settings_test_util.h"
 #import "ios/chrome/test/app/web_view_interaction_test_util.h"
 #include "ios/chrome/test/earl_grey/chrome_assertions.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/testing/wait_util.h"
 #import "ios/web/public/test/earl_grey/web_view_matchers.h"
-#import "ios/web/public/test/http_server.h"
-#import "ios/web/public/test/http_server_util.h"
-#import "ios/web/public/test/response_providers/error_page_response_provider.h"
+#import "ios/web/public/test/http_server/error_page_response_provider.h"
+#import "ios/web/public/test/http_server/http_server.h"
+#include "ios/web/public/test/http_server/http_server_util.h"
 #import "ios/web/public/test/web_view_interaction_test_util.h"
 #include "url/gurl.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 
 // TODO(crbug.com/638674): Move this to a shared location as it is a duplicate
@@ skipping 373 matching lines @@
   [ChromeEarlGrey loadURL:URL];
   HideToolbarUsingUI();
   [ChromeEarlGreyUI waitForToolbarVisible:NO];
 
   chrome_test_util::TapWebViewElementWithId("link");
   AssertURLIs(ErrorPageResponseProvider::GetDnsFailureUrl());
   [ChromeEarlGreyUI waitForToolbarVisible:YES];
 }
 
 @end