Split up ios/web:test_support.

ios/chrome/browser/metrics/tab_usage_recorder_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.
 
 #include "base/mac/bind_objc_block.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #import "base/test/ios/wait_util.h"
@@ skipping 11 matching lines @@
 #import "ios/chrome/test/app/tab_test_util.h"
 #include "ios/chrome/test/app/web_view_interaction_test_util.h"
 #import "ios/chrome/test/earl_grey/chrome_actions.h"
 #import "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"
-#include "ios/web/public/test/response_providers/delayed_response_provider.h"
-#include "ios/web/public/test/response_providers/html_response_provider.h"
+#include "ios/web/public/test/http_server/delayed_response_provider.h"
+#include "ios/web/public/test/http_server/html_response_provider.h"
+#import "ios/web/public/test/http_server/http_server.h"
+#import "ios/web/public/test/http_server/http_server_util.h"

[Eugene But (OOO till 7-30), 2017/05/26 17:22:28]

nit: s/import/include 

[baxley, 2017/05/26 18:06:20]

Done.

 #include "ui/base/l10n/l10n_util_mac.h"
 #include "url/gurl.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 using chrome_test_util::OpenLinkInNewTabButton;
 using chrome_test_util::SettingsMenuButton;
 using tab_usage_recorder_test_util::OpenNewIncognitoTabUsingUIAndEvictMainTabs;
@@ skipping 787 matching lines @@
     [[GREYUIThreadExecutor sharedInstance] drainUntilIdle];
   }
   // The deleted tabs are purged during foregrounding and backgrounding.
   chrome_test_util::SimulateTabsBackgrounding();
   // Make sure |evicted_tabs_| purged the deleted tabs.
   int evicted = chrome_test_util::GetEvictedMainTabCount();
   GREYAssertEqual(evicted, 0, @"Check number of evicted tabs");
 }
 
 @end