Import translations. DO NOT MERGE

Change-Id: I85840e6082a576dae720ab53920f2031d6d9a703
Auto-generated-cl: translation import
diff --git a/res/values-ja/strings.xml b/res/values-ja/strings.xml
index ee82f38..7b15a61 100644
--- a/res/values-ja/strings.xml
+++ b/res/values-ja/strings.xml
@@ -143,8 +143,7 @@
     <string name="auto" msgid="4296941368722892821">"オート"</string>
     <string name="flash_on" msgid="7891556231891837284">"フラッシュON"</string>
     <string name="flash_off" msgid="1445443413822680010">"フラッシュOFF"</string>
-    <!-- no translation found for unknown (3506693015896912952) -->
-    <skip />
+    <string name="unknown" msgid="3506693015896912952">"不明"</string>
     <string name="ffx_original" msgid="372686331501281474">"オリジナル"</string>
     <string name="ffx_vintage" msgid="8348759951363844780">"ヴィンテージ"</string>
     <string name="ffx_instant" msgid="726968618715691987">"インスタント"</string>