Import translations. DO NOT MERGE

Change-Id: I8be564ef6befc36c59caa155f4b9c6c74740d75b
diff --git a/java/res/values-ja/strings.xml b/java/res/values-ja/strings.xml
index c0b04ea..c7e06fe 100644
--- a/java/res/values-ja/strings.xml
+++ b/java/res/values-ja/strings.xml
@@ -35,7 +35,8 @@
     <string name="correction_category" msgid="2236750915056607613">"テキストの修正"</string>
     <string name="misc_category" msgid="6894192814868233453">"他のオプション"</string>
     <string name="advanced_settings" msgid="362895144495591463">"詳細設定"</string>
-    <string name="advanced_settings_summary" msgid="5193513161106637254">"上級ユーザー向けオプション"</string>
+    <!-- no translation found for advanced_settings_summary (4487980456152830271) -->
+    <skip />
     <string name="key_preview_popup_dismiss_delay" msgid="6213164897443068248">"キーのポップアップ時間"</string>
     <string name="key_preview_popup_dismiss_no_delay" msgid="2096123151571458064">"すぐに消去"</string>
     <string name="key_preview_popup_dismiss_default_delay" msgid="2166964333903906734">"デフォルト"</string>
@@ -65,8 +66,7 @@
     <string name="added_word" msgid="8993883354622484372">"<xliff:g id="WORD">%s</xliff:g>:保存しました"</string>
     <string name="label_go_key" msgid="1635148082137219148">"実行"</string>
     <string name="label_next_key" msgid="362972844525672568">"次へ"</string>
-    <!-- no translation found for label_previous_key (1211868118071386787) -->
-    <skip />
+    <string name="label_previous_key" msgid="1211868118071386787">"前"</string>
     <string name="label_done_key" msgid="2441578748772529288">"完了"</string>
     <string name="label_send_key" msgid="2815056534433717444">"送信"</string>
     <string name="label_to_alpha_key" msgid="4793983863798817523">"ABC"</string>