Merge "ResearchLog refactor"

java/proguard.flags

...c/com/android/inputmethod/keyboard/LatinKeyboardView.java

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

.../inputmethod/keyboard/SuddenJumpingTouchEventHandler.java

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

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

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

...ndroid/inputmethod/latin/suggestions/SuggestionsView.java

java/src/com/android/inputmethod/research/ResearchLog.java

.../src/com/android/inputmethod/research/ResearchLogger.java