Fix keyboard caching bug for testing

Change-Id: I00584a68d868f38c065bb6a41e8e5f4eafd44e7f

java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java

@@ -293,7 +293,7 @@ public final class KeyboardLayoutSet {
         }
 
         public Builder setIsSpellChecker(final boolean isSpellChecker) {
-            mParams.mIsSpellChecker = true;
+            mParams.mIsSpellChecker = isSpellChecker;
             return this;
         }