Add StatsUtils#onLoadSettings for when settings are changed

Non-blocking call in nature.
Bug:17013677

Change-Id: Iff737422bbacbf22c9b0ff6eaf1c1f75e6bf23c3

java-overridable/src/com/android/inputmethod/latin/utils/StatsUtils.java

@@ -79,4 +79,7 @@ public final class StatsUtils {
     public static void onWordCommitSuggestionPickedManually(
             final String commitWord, final boolean isBatchMode) {
     }
+
+    public static void onLoadSettings(SettingsValues settingsValues) {
+    }
 }

java/src/com/android/inputmethod/latin/settings/Settings.java

@@ -32,6 +32,7 @@ import com.android.inputmethod.latin.R;
 import com.android.inputmethod.latin.utils.AdditionalSubtypeUtils;
 import com.android.inputmethod.latin.utils.ResourceUtils;
 import com.android.inputmethod.latin.utils.RunInLocale;
+import com.android.inputmethod.latin.utils.StatsUtils;
 import com.android.inputmethod.latin.utils.StringUtils;
 
 import java.util.Collections;
@@ -169,6 +170,7 @@ public final class Settings implements SharedPreferences.OnSharedPreferenceChang
                 return;
             }
             loadSettings(mContext, mSettingsValues.mLocale, mSettingsValues.mInputAttributes);
+            StatsUtils.onLoadSettings(mSettingsValues);
         } finally {
             mSettingsValuesLock.unlock();
         }