Fix keyboard caching bug for testing

Change-Id: I00584a68d868f38c065bb6a41e8e5f4eafd44e7f
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java b/java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java
index 6a900b4..5f65fc4 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java
@@ -293,7 +293,7 @@
         }
 
         public Builder setIsSpellChecker(final boolean isSpellChecker) {
-            mParams.mIsSpellChecker = true;
+            mParams.mIsSpellChecker = isSpellChecker;
             return this;
         }