Autoscroll new background tabs on iPad

ios/chrome/browser/about_flags.mm

 // Copyright 2012 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.
 
 // Implementation of about_flags for iOS that sets flags based on experimental
 // settings.
 
 #include "ios/chrome/browser/about_flags.h"
 
 #include <stddef.h>
@@ skipping 80 matching lines @@
     command_line->AppendSwitchASCII(switches::kLsoUrl,
                                     BUILDFLAG(GOOGLE_TEST_LSO_URL));
     command_line->AppendSwitchASCII(switches::kSyncServiceURL,
                                     BUILDFLAG(GOOGLE_TEST_SYNC_URL));
     command_line->AppendSwitchASCII(switches::kOAuth2ClientID,
                                     BUILDFLAG(GOOGLE_TEST_OAUTH_CLIENT_ID));
     command_line->AppendSwitchASCII(switches::kOAuth2ClientSecret,
                                     BUILDFLAG(GOOGLE_TEST_OAUTH_CLIENT_SECRET));
   }
 
+  // Populate command line flag for the tab strip auto scroll new tabs
+  // experiment from the configuration plist.
+  if ([defaults boolForKey:@"TabStripAutoScrollNewTabsDisabled"])
+    command_line->AppendSwitch(switches::kDisableTabStripAutoScrollNewTabs);
+
   // Populate command line flag for the Tab Switcher experiment from the
   // configuration plist.
   NSString* enableTabSwitcher = [defaults stringForKey:@"EnableTabSwitcher"];
   if ([enableTabSwitcher isEqualToString:@"Enabled"]) {
     command_line->AppendSwitch(switches::kEnableTabSwitcher);
   } else if ([enableTabSwitcher isEqualToString:@"Disabled"]) {
     command_line->AppendSwitch(switches::kDisableTabSwitcher);
   }
 
   // Populate command line flag for the SnapshotLRUCache experiment from the
@@ skipping 227 matching lines @@
 }
 
 namespace testing {
 
 const flags_ui::FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing