Make EarlGrey matchers compliant with Chromium style.

ios/chrome/browser/ui/settings/clear_browsing_data_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 <XCTest/XCTest.h>
 
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/browser/ui/tools_menu/tools_menu_view_controller.h"
 #include "ios/chrome/grit/ios_strings.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"
 #include "ui/base/l10n/l10n_util.h"
 
-using chrome_test_util::buttonWithAccessibilityLabel;
-using chrome_test_util::buttonWithAccessibilityLabelId;
+using chrome_test_util::ButtonWithAccessibilityLabel;
+using chrome_test_util::ButtonWithAccessibilityLabelId;
 
 @interface ClearBrowsingDataSettingsTestCase : ChromeTestCase
 @end
 
 @implementation ClearBrowsingDataSettingsTestCase
 
 - (void)openClearBrowsingDataDialog {
   [ChromeEarlGreyUI openToolsMenu];
   [[EarlGrey
       selectElementWithMatcher:grey_accessibilityID(kToolsMenuSettingsId)]
       performAction:grey_tap()];
   NSString* settingsLabel =
       l10n_util::GetNSString(IDS_OPTIONS_ADVANCED_SECTION_TITLE_PRIVACY);
   [[EarlGrey
-      selectElementWithMatcher:buttonWithAccessibilityLabel(settingsLabel)]
+      selectElementWithMatcher:ButtonWithAccessibilityLabel(settingsLabel)]
       performAction:grey_tap()];
 
   NSString* clearBrowsingDataDialogLabel =
       l10n_util::GetNSString(IDS_IOS_CLEAR_BROWSING_DATA_TITLE);
-  [[EarlGrey selectElementWithMatcher:buttonWithAccessibilityLabel(
+  [[EarlGrey selectElementWithMatcher:ButtonWithAccessibilityLabel(
                                           clearBrowsingDataDialogLabel)]
       performAction:grey_tap()];
 }
 
 - (void)exitSettingsMenu {
-  [[EarlGrey selectElementWithMatcher:buttonWithAccessibilityLabelId(
+  [[EarlGrey selectElementWithMatcher:ButtonWithAccessibilityLabelId(
                                           IDS_IOS_NAVIGATION_BAR_DONE_BUTTON)]
       performAction:grey_tap()];
   // Wait for UI components to finish loading.
   [[GREYUIThreadExecutor sharedInstance] drainUntilIdle];
 }
 
 // Test that opening the clear browsing data dialog does not cause a crash.
 - (void)testOpeningClearBrowsingData {
   NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
   NSString* oldSetting =
       [defaults stringForKey:@"EnableNewClearBrowsingDataUI"];
   [defaults setObject:@"Enabled" forKey:@"EnableNewClearBrowsingDataUI"];
 
   [self openClearBrowsingDataDialog];
   [self exitSettingsMenu];
 
   [defaults setObject:oldSetting forKey:@"EnableNewClearBrowsingDataUI"];
 }
 
 @end