Enable all registered types by default on Android.

chrome/browser/sync/sync_prefs.cc

Index: chrome/browser/sync/sync_prefs.cc
diff --git a/chrome/browser/sync/sync_prefs.cc b/chrome/browser/sync/sync_prefs.cc
index 1b7a92fb7200b06fc1783085e00c5807f214aa7d..e841eb35c7aa3ac2caa2361a24a8095044c8ac1d 100644
--- a/chrome/browser/sync/sync_prefs.cc
+++ b/chrome/browser/sync/sync_prefs.cc
@@ -321,11 +321,11 @@ void SyncPrefs::RegisterPreferences() {
                                    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 =