Enable all registered types by default on Android.

chrome/browser/sync/sync_prefs.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/sync/sync_prefs.h"
 
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
 #include "base/values.h"
 #include "build/build_config.h"
@@ skipping 303 matching lines @@
   pref_service_->RegisterBooleanPref(prefs::kSyncHasSetupCompleted,
                                      false,
                                      PrefService::UNSYNCABLE_PREF);
   pref_service_->RegisterBooleanPref(prefs::kSyncSuppressStart,
                                      false,
                                      PrefService::UNSYNCABLE_PREF);
   pref_service_->RegisterInt64Pref(prefs::kSyncLastSyncedTime,
                                    0,
                                    PrefService::UNSYNCABLE_PREF);
 
-  // If you've never synced before, or if you're using Chrome OS, all datatypes
-  // are on by default.
+  // If you've never synced before, or if you're using Chrome OS or Android,
+  // all datatypes are on by default.
   // TODO(nick): Perhaps a better model would be to always default to false,
   // and explicitly call SetDataTypes() when the user shows the wizard.
-#if defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS) || defined(OS_ANDROID)
   bool enable_by_default = true;
 #else
   bool enable_by_default =
       !pref_service_->HasPrefPath(prefs::kSyncHasSetupCompleted);
 #endif
 
   pref_service_->RegisterBooleanPref(prefs::kSyncKeepEverythingSynced,
                                      enable_by_default,
                                      PrefService::UNSYNCABLE_PREF);
 
@@ skipping 94 matching lines @@
     if (types.Has(i->first))
       types_with_groups.PutAll(i->second);
     else
       types_with_groups.RemoveAll(i->second);
   }
   types_with_groups.RetainAll(registered_types);
   return types_with_groups;
 }
 
 }  // namespace browser_sync