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Add json formatter tool

XiaosongWei/crosswalk-test-suite,pk-sam/crosswalk-test-suite,XiaosongWei/crosswalk-test-suite,Honry/crosswalk-test-suite,Shao-Feng/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,zhuyongyong/crosswalk-test-suite,zhuyongyong/crosswalk-test-suite,zhuyongyong/crosswalk-test-suite,yhe39/crosswalk-test-suite,zqzhang/crosswalk-test-suite,qiuzhong/crosswalk-test-suite,haoxli/crosswalk-test-suite,Shao-Feng/crosswalk-test-suite,BruceDai/crosswalk-test-suite,YongseopKim/crosswalk-test-suite,kangxu/crosswalk-test-suite,kangxu/crosswalk-test-suite,zhuyongyong/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,chunywang/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,haoxli/crosswalk-test-suite,yunxliu/crosswalk-test-suite,wanghongjuan/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,BruceDai/crosswalk-test-suite,yunxliu/crosswalk-test-suite,zqzhang/crosswalk-test-suite,YongseopKim/crosswalk-test-suite,zhuyongyong/crosswalk-test-suite,JianfengXu/crosswalk-test-suite,qiuzhong/crosswalk-test-suite,ibelem/crosswalk-test-suite,yhe39/crosswalk-test-suite,BruceDai/crosswalk-test-suite,zqzhang/crosswalk-test-suite,Honry/crosswalk-test-suite,xiaojunwu/crosswalk-test-suite,chunywang/crosswalk-test-suite,ibelem/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,xiaojunwu/crosswalk-test-suite,YongseopKim/crosswalk-test-suite,Honry/crosswalk-test-suite,JianfengXu/crosswalk-test-suite,haoxli/crosswalk-test-suite,ibelem/crosswalk-test-suite,jiajiax/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,pk-sam/crosswalk-test-suite,Honry/crosswalk-test-suite,jacky-young/crosswalk-test-suite,qiuzhong/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,yunxliu/crosswalk-test-suite,Shao-Feng/crosswalk-test-suite,JianfengXu/crosswalk-test-suite,xiaojunwu/crosswalk-test-suite,chunywang/crosswalk-test-suite,pk-sam/crosswalk-test-suite,JianfengXu/crosswalk-test-suite,BruceDai/crosswalk-test-suite,ibelem/crosswalk-test-suite,Shao-Feng/crosswalk-test-suite,zqzhang/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,YongseopKim/crosswalk-test-suite,wanghongjuan/crosswalk-test-suite,kangxu/crosswalk-test-suite,yunxliu/crosswalk-test-suite,kangxu/crosswalk-test-suite,yunxliu/crosswalk-test-suite,zqzhang/crosswalk-test-suite,pk-sam/crosswalk-test-suite,ibelem/crosswalk-test-suite,haoxli/crosswalk-test-suite,chunywang/crosswalk-test-suite,haoxli/crosswalk-test-suite,chunywang/crosswalk-test-suite,kangxu/crosswalk-test-suite,kangxu/crosswalk-test-suite,Honry/crosswalk-test-suite,jiajiax/crosswalk-test-suite,zhuyongyong/crosswalk-test-suite,jiajiax/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,chunywang/crosswalk-test-suite,Honry/crosswalk-test-suite,wanghongjuan/crosswalk-test-suite,BruceDai/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,XiaosongWei/crosswalk-test-suite,zqzhang/crosswalk-test-suite,yhe39/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,xiaojunwu/crosswalk-test-suite,Shao-Feng/crosswalk-test-suite,jiajiax/crosswalk-test-suite,pk-sam/crosswalk-test-suite,yugang/crosswalk-test-suite,qiuzhong/crosswalk-test-suite,jacky-young/crosswalk-test-suite,yunxliu/crosswalk-test-suite,ibelem/crosswalk-test-suite,yugang/crosswalk-test-suite,zqzhang/crosswalk-test-suite,jacky-young/crosswalk-test-suite,YongseopKim/crosswalk-test-suite,yunxliu/crosswalk-test-suite,chunywang/crosswalk-test-suite,yugang/crosswalk-test-suite,haoxli/crosswalk-test-suite,yhe39/crosswalk-test-suite,xiaojunwu/crosswalk-test-suite,chunywang/crosswalk-test-suite,ibelem/crosswalk-test-suite,wanghongjuan/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,yugang/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,zhuyongyong/crosswalk-test-suite,XiaosongWei/crosswalk-test-suite,jacky-young/crosswalk-test-suite,yhe39/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,XiaosongWei/crosswalk-test-suite,JianfengXu/crosswalk-test-suite,wanghongjuan/crosswalk-test-suite,zhuyongyong/crosswalk-test-suite,Shao-Feng/crosswalk-test-suite,BruceDai/crosswalk-test-suite,ibelem/crosswalk-test-suite,pk-sam/crosswalk-test-suite,YongseopKim/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,jiajiax/crosswalk-test-suite,jiajiax/crosswalk-test-suite,BruceDai/crosswalk-test-suite,pk-sam/crosswalk-test-suite,zqzhang/crosswalk-test-suite,jiajiax/crosswalk-test-suite,qiuzhong/crosswalk-test-suite,wanghongjuan/crosswalk-test-suite,kangxu/crosswalk-test-suite,yhe39/crosswalk-test-suite,qiuzhong/crosswalk-test-suite,BruceDai/crosswalk-test-suite,haoxli/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,Shao-Feng/crosswalk-test-suite,YongseopKim/crosswalk-test-suite,JianfengXu/crosswalk-test-suite,jacky-young/crosswalk-test-suite,yhe39/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,yugang/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,crosswalk-project/crosswalk-test-suite,yunxliu/crosswalk-test-suite,Honry/crosswalk-test-suite,XiaosongWei/crosswalk-test-suite,XiaosongWei/crosswalk-test-suite,yugang/crosswalk-test-suite,Honry/crosswalk-test-suite,yugang/crosswalk-test-suite,qiuzhong/crosswalk-test-suite,xiaojunwu/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,yhe39/crosswalk-test-suite,haoxli/crosswalk-test-suite,kangxu/crosswalk-test-suite,kaixinjxq/crosswalk-test-suite,JianfengXu/crosswalk-test-suite,wanghongjuan/crosswalk-test-suite,haoyunfeix/crosswalk-test-suite,jacky-young/crosswalk-test-suite,wanghongjuan/crosswalk-test-suite