Make settings_egtest.mm work in landscape on small phones.

ios/chrome/test/earl_grey/chrome_earl_grey_ui.h

 // 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.
 
 #ifndef IOS_CHROME_TEST_EARL_GREY_CHROME_EARL_GREY_UI_H_
 #define IOS_CHROME_TEST_EARL_GREY_CHROME_EARL_GREY_UI_H_
 
+#import <EarlGrey/EarlGrey.h>
 #import <Foundation/Foundation.h>
 
 // Test methods that perform actions on Chrome. These methods only affect Chrome
 // using the UI with Earl Grey.
 @interface ChromeEarlGreyUI : NSObject
 
 // Makes the toolbar visible by swiping downward, if necessary. Then taps on
 // the Tools menu button. At least one tab needs to be open and visible when
 // calling this method.
 + (void)openToolsMenu;
 
 // Opens the settings menu by opening the tools menu, and then tapping the
 // Settings button. There will be a GREYAssert if the tools menu is open when
 // calling this method.
 + (void)openSettingsMenu;
 
+// Scrolls to find the button in the Settings menu with the corresponding
+// |buttonMatcher|, and then taps it. If |buttonMatcher| is not found, or
+// the Settings menu is not open when this is called there will be a GREYAssert.
++ (void)tapSettingsMenuButton:(id<GREYMatcher>)buttonMatcher;
+
+// Scrolls to find the button in the Privacy menu with the corresponding
+// |buttonMatcher|, and then taps it. If |buttonMatcher| is not found, or
+// the Privacy menu is not open when this is called there will be a GREYAssert.
++ (void)tapPrivacyMenuButton:(id<GREYMatcher>)buttonMatcher;
+
+// Scrolls to find the button in the Clear Browsing Data menu with the
+// corresponding |buttonMatcher|, and then taps it. If |buttonMatcher| is
+// not found, or the Clear Browsing Data menu is not open when this is called
+// there will be a GREYAssert.
++ (void)tapClearBrowsingDataMenuButton:(id<GREYMatcher>)buttonMatcher;
+
 // Open a new tab via the tools menu.
 + (void)openNewTab;
 
 // Open a new incognito tab via the tools menu.
 + (void)openNewIncognitoTab;
 
 // Reloads the page via the reload button, and does not wait for the page to
 // finish loading.
 + (void)reload;
 
 // Opens the share menu via the share button.
 // This method requires that there is at least one tab open.
 + (void)openShareMenu;
 
 // Waits for toolbar to become visible if |isVisible| is YES, otherwise waits
 // for it to disappear. If the condition is not met within a timeout, a
 // GREYAssert is induced.
 + (void)waitForToolbarVisible:(BOOL)isVisible;
 
 @end
 
 #endif  // IOS_CHROME_TEST_EARL_GREY_CHROME_EARL_GREY_UI_H_