Merge "Move and rename computeProximityThreshold"

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

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

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

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

tests/src/com/android/inputmethod/latin/SuggestHelper.java