https://stackoverflow.com/questions/13398409/mouse-right-button-mapped-to-work-for-traversing-back-in-jelly-bean

https://codewalkerster.blogspot.kr/2012/07/ics-mouse-right-click-back-button.html

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framework/base/services/input/inputreader.cpp 파일에서

case BTN_RIGHT:
    mBtnRight = rawEvent->value;
    break;

to

case BTN_RIGHT:                       
    mBtnBack = rawEvent->value;
    break;

이렇게 바꾸면 된다는데, 안된다는 질답입니다.

해서

요렇게 바꾸면 된다네요...^^

 in function reset(InputDevice* device) {

            replace mBtnRight = device->isKeyPressed(BTN_RIGHT); line to

                    mBtnBack =  device->isKeyPressed(BTN_RIGHT);

             and 
  in function process(const RawEvent* rawEvent) {

              remove  3 lines   case BTN_RIGHT:
                                mBtnRight = rawEvent->value;
                                break;
                     and Add "case BTN_RIGHT:" before case BTN_BACK:" as shown below

                     case BTN_RIGHT:
                     case BTN_BACK:                       
                     mBtnBack = rawEvent->value;
                     break;