Update architecture diagram.
Update architecture diagram.

PeterWangIntel/crosswalk,baleboy/crosswalk,amaniak/crosswalk,chuan9/crosswalk,lincsoon/crosswalk,siovene/crosswalk,zliang7/crosswalk,chinakids/crosswalk,hgl888/crosswalk-efl,XiaosongWei/crosswalk,jpike88/crosswalk,Shouqun/crosswalk,jpike88/crosswalk,tomatell/crosswalk,chuan9/crosswalk,dreamsxin/crosswalk,xzhan96/crosswalk,hgl888/crosswalk-efl,marcuspridham/crosswalk,jondong/crosswalk,tomatell/crosswalk,xzhan96/crosswalk,baleboy/crosswalk,baleboy/crosswalk,minggangw/crosswalk,axinging/crosswalk,hgl888/crosswalk-efl,axinging/crosswalk,Pluto-tv/crosswalk,RafuCater/crosswalk,wuhengzhi/crosswalk,shaochangbin/crosswalk,hgl888/crosswalk-efl,minggangw/crosswalk,huningxin/crosswalk,heke123/crosswalk,bestwpw/crosswalk,jondwillis/crosswalk,DonnaWuDongxia/crosswalk,stonegithubs/crosswalk,fujunwei/crosswalk,pk-sam/crosswalk,fujunwei/crosswalk,bestwpw/crosswalk,stonegithubs/crosswalk,tomatell/crosswalk,Shouqun/crosswalk,siovene/crosswalk,fujunwei/crosswalk,Shouqun/crosswalk,crosswalk-project/crosswalk,marcuspridham/crosswalk,hgl888/crosswalk-efl,jondong/crosswalk,alex-zhang/crosswalk,zeropool/crosswalk,huningxin/crosswalk,rakuco/crosswalk,shaochangbin/crosswalk,darktears/crosswalk,chinakids/crosswalk,marcuspridham/crosswalk,baleboy/crosswalk,baleboy/crosswalk,leonhsl/crosswalk,leonhsl/crosswalk,rakuco/crosswalk,zeropool/crosswalk,RafuCater/crosswalk,marcuspridham/crosswalk,leonhsl/crosswalk,stonegithubs/crosswalk,hgl888/crosswalk,weiyirong/crosswalk-1,tedshroyer/crosswalk,xzhan96/crosswalk,shaochangbin/crosswalk,hgl888/crosswalk,alex-zhang/crosswalk,siovene/crosswalk,darktears/crosswalk,DonnaWuDongxia/crosswalk,heke123/crosswalk,baleboy/crosswalk,weiyirong/crosswalk-1,stonegithubs/crosswalk,wuhengzhi/crosswalk,siovene/crosswalk,zeropool/crosswalk,seanlong/crosswalk,mrunalk/crosswalk,Bysmyyr/crosswalk,heke123/crosswalk,ZhengXinCN/crosswalk,marcuspridham/crosswalk,seanlong/crosswalk,mrunalk/crosswalk,fujunwei/crosswalk,chuan9/crosswalk,XiaosongWei/crosswalk,lincsoon/crosswalk,bestwpw/crosswalk,jondwillis/crosswalk,tedshroyer/crosswalk,PeterWangIntel/crosswalk,minggangw/crosswalk,jpike88/crosswalk,hgl888/crosswalk,dreamsxin/crosswalk,kurli/crosswalk,ZhengXinCN/crosswalk,dreamsxin/crosswalk,darktears/crosswalk,lincsoon/crosswalk,mrunalk/crosswalk,tomatell/crosswalk,bestwpw/crosswalk,pozdnyakov/crosswalk,fujunwei/crosswalk,chinakids/crosswalk,PeterWangIntel/crosswalk,xzhan96/crosswalk,rakuco/crosswalk,siovene/crosswalk,chuan9/crosswalk,Bysmyyr/crosswalk,rakuco/crosswalk,tedshroyer/crosswalk,siovene/crosswalk,fujunwei/crosswalk,TheDirtyCalvinist/spacewalk,Bysmyyr/crosswalk,zeropool/crosswalk,jondong/crosswalk,pk-sam/crosswalk,kurli/crosswalk,siovene/crosswalk,Bysmyyr/crosswalk,chuan9/crosswalk,crosswalk-project/crosswalk,XiaosongWei/crosswalk,kurli/crosswalk,qjia7/crosswalk,zliang7/crosswalk,hgl888/crosswalk-efl,Shouqun/crosswalk,Bysmyyr/crosswalk,zliang7/crosswalk,xzhan96/crosswalk,huningxin/crosswalk,marcuspridham/crosswalk,Bysmyyr/crosswalk,pk-sam/crosswalk,jondwillis/crosswalk,DonnaWuDongxia/crosswalk,qjia7/crosswalk,marcuspridham/crosswalk,RafuCater/crosswalk,PeterWangIntel/crosswalk,jondong/crosswalk,leonhsl/crosswalk,TheDirtyCalvinist/spacewalk,axinging/crosswalk,weiyirong/crosswalk-1,huningxin/crosswalk,zliang7/crosswalk,jpike88/crosswalk,pk-sam/crosswalk,myroot/crosswalk,pozdnyakov/crosswalk,dreamsxin/crosswalk,heke123/crosswalk,jondong/crosswalk,ZhengXinCN/crosswalk,chuan9/crosswalk,wuhengzhi/crosswalk,crosswalk-project/crosswalk,Pluto-tv/crosswalk,bestwpw/crosswalk,stonegithubs/crosswalk,crosswalk-project/crosswalk-efl,bestwpw/crosswalk,dreamsxin/crosswalk,darktears/crosswalk,minggangw/crosswalk,XiaosongWei/crosswalk,baleboy/crosswalk,xzhan96/crosswalk,DonnaWuDongxia/crosswalk,myroot/crosswalk,shaochangbin/crosswalk,seanlong/crosswalk,hgl888/crosswalk,PeterWangIntel/crosswalk,seanlong/crosswalk,hgl888/crosswalk,hgl888/crosswalk,minggangw/crosswalk,crosswalk-project/crosswalk-efl,zliang7/crosswalk,crosswalk-project/crosswalk-efl,RafuCater/crosswalk,weiyirong/crosswalk-1,crosswalk-project/crosswalk-efl,darktears/crosswalk,RafuCater/crosswalk,huningxin/crosswalk,xzhan96/crosswalk,jondong/crosswalk,tomatell/crosswalk,mrunalk/crosswalk,huningxin/crosswalk,TheDirtyCalvinist/spacewalk,amaniak/crosswalk,alex-zhang/crosswalk,axinging/crosswalk,Pluto-tv/crosswalk,myroot/crosswalk,ZhengXinCN/crosswalk,lincsoon/crosswalk,PeterWangIntel/crosswalk,crosswalk-project/crosswalk,darktears/crosswalk,kurli/crosswalk,crosswalk-project/crosswalk-efl,heke123/crosswalk,darktears/crosswalk,jondwillis/crosswalk,wuhengzhi/crosswalk,XiaosongWei/crosswalk,jondwillis/crosswalk,crosswalk-project/crosswalk-efl,RafuCater/crosswalk,leonhsl/crosswalk,wuhengzhi/crosswalk,qjia7/crosswalk,alex-zhang/crosswalk,amaniak/crosswalk,Pluto-tv/crosswalk,Bysmyyr/crosswalk,crosswalk-project/crosswalk,baleboy/crosswalk,lincsoon/crosswalk,XiaosongWei/crosswalk,crosswalk-project/crosswalk,shaochangbin/crosswalk,PeterWangIntel/crosswalk,tedshroyer/crosswalk,zliang7/crosswalk,rakuco/crosswalk,lincsoon/crosswalk,stonegithubs/crosswalk,chinakids/crosswalk,zeropool/crosswalk,qjia7/crosswalk,TheDirtyCalvinist/spacewalk,amaniak/crosswalk,lincsoon/crosswalk,shaochangbin/crosswalk,DonnaWuDongxia/crosswalk,zliang7/crosswalk,leonhsl/crosswalk,jpike88/crosswalk,wuhengzhi/crosswalk,darktears/crosswalk,jondong/crosswalk,pozdnyakov/crosswalk,xzhan96/crosswalk,qjia7/crosswalk,pozdnyakov/crosswalk,dreamsxin/crosswalk,chinakids/crosswalk,seanlong/crosswalk,alex-zhang/crosswalk,TheDirtyCalvinist/spacewalk,Bysmyyr/crosswalk,crosswalk-project/crosswalk,minggangw/crosswalk,myroot/crosswalk,amaniak/crosswalk,tomatell/crosswalk,Pluto-tv/crosswalk,myroot/crosswalk,zeropool/crosswalk,tomatell/crosswalk,kurli/crosswalk,Pluto-tv/crosswalk,kurli/crosswalk,zliang7/crosswalk,weiyirong/crosswalk-1,RafuCater/crosswalk,mrunalk/crosswalk,hgl888/crosswalk-efl,seanlong/crosswalk,jondong/crosswalk,DonnaWuDongxia/crosswalk,jpike88/crosswalk,axinging/crosswalk,alex-zhang/crosswalk,alex-zhang/crosswalk,tedshroyer/crosswalk,ZhengXinCN/crosswalk,heke123/crosswalk,amaniak/crosswalk,DonnaWuDongxia/crosswalk,minggangw/crosswalk,jpike88/crosswalk,rakuco/crosswalk,XiaosongWei/crosswalk,stonegithubs/crosswalk,zeropool/crosswalk,TheDirtyCalvinist/spacewalk,crosswalk-project/crosswalk-efl,bestwpw/crosswalk,amaniak/crosswalk,pozdnyakov/crosswalk,fujunwei/crosswalk,crosswalk-project/crosswalk,jondwillis/crosswalk,myroot/crosswalk,ZhengXinCN/crosswalk,weiyirong/crosswalk-1,minggangw/crosswalk,marcuspridham/crosswalk,dreamsxin/crosswalk,pk-sam/crosswalk,mrunalk/crosswalk,tedshroyer/crosswalk,hgl888/crosswalk,pk-sam/crosswalk,ZhengXinCN/crosswalk,pozdnyakov/crosswalk,lincsoon/crosswalk,axinging/crosswalk,heke123/crosswalk,heke123/crosswalk,Shouqun/crosswalk,Pluto-tv/crosswalk,axinging/crosswalk,chinakids/crosswalk,jondwillis/crosswalk,pk-sam/crosswalk,Shouqun/crosswalk,qjia7/crosswalk,rakuco/crosswalk,hgl888/crosswalk,weiyirong/crosswalk-1,chuan9/crosswalk,tedshroyer/crosswalk,rakuco/crosswalk,leonhsl/crosswalk