[ios] Remove IDC_STOP and IDC_RELOAD

ios/chrome/browser/web/cache_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>
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/common/content_settings.h"
@@ skipping 142 matching lines @@
 
 // Tests the browser cache behavior when navigating to cached pages.
 @interface CacheTestCase : ChromeTestCase
 @end
 
 @implementation CacheTestCase
 
 // Reloads the web view and waits for the loading to complete.
 // TODO(crbug.com/638674): Evaluate if this can move to shared code
 - (void)reloadPage {
-  GenericChromeCommand* reloadCommand =
-      [[GenericChromeCommand alloc] initWithTag:IDC_RELOAD];
-  chrome_test_util::RunCommandWithActiveViewController(reloadCommand);
+  [chrome_test_util::BrowserCommandDispatcherForMainBVC() reload];
 
   [ChromeEarlGrey waitForPageToFinishLoading];
 }
 
 // Navigates back to the previous webpage.
 // TODO(crbug.com/638674): Evaluate if this can move to shared code.
 - (void)goBack {
   [chrome_test_util::BrowserCommandDispatcherForMainBVC() goBack];
 
   [ChromeEarlGrey waitForPageToFinishLoading];
@@ skipping 81 matching lines @@
   [[EarlGrey
       selectElementWithMatcher:grey_accessibilityID(@"omnibox suggestion 1")]
       performAction:grey_tap()];
 
   // Verify title and hitCount. Cache should not be used.
   [ChromeEarlGrey waitForWebViewContainingText:"First Page"];
   [ChromeEarlGrey waitForWebViewContainingText:"serverHitCounter: 2"];
 }
 
 @end