DO NOT MERGE. Save keyboard layout only when it is shown

This is a cherrypick of I150b4a05 from master to ics-mr1.

Bug: 5130446
Bug: 5787394
Change-Id: Ie0d58283042166537ff161344564c3c51b0d1296

java/src/com/android/inputmethod/latin/LatinIME.java

@@ -405,8 +405,10 @@ public class LatinIME extends InputMethodServiceCompatWrapper implements Keyboar
             resetPendingImsCallback();
             mIsOrientationChanging = true;
             final LatinIME latinIme = getOuterInstance();
+            if (latinIme.isInputViewShown()) {
                 latinIme.mKeyboardSwitcher.saveKeyboardState();
             }
+        }
 
         private void resetPendingImsCallback() {
             mHasPendingFinishInputView = false;