Add calls to stub for API to consume gesture data.

...inputmethod/latin/touchinputconsumer/GestureConsumer.java

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

...rc/com/android/inputmethod/latin/RichInputConnection.java

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

.../com/android/inputmethod/latin/inputlogic/InputLogic.java

...inputmethod/latin/inputlogic/PrivateCommandPerformer.java

.../com/android/inputmethod/latin/utils/CollectionUtils.java

...od/latin/touchinputconsumer/NullGestureConsumerTests.java

...android/inputmethod/latin/utils/CollectionUtilsTests.java