[Extensions] Use STL helpers to delete the contents of STL containers
[Extensions] Use STL helpers to delete the contents of STL containers

Cosmetics, saves some LOC.

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