[Android] envsetup: Stop unsetting CHROMIUM_GYP_FILE.
[Android] envsetup: Stop unsetting CHROMIUM_GYP_FILE.

This is one step towards simplifying our envsetup.sh. Chromium stopped
touching CHROMIUM_GYP_FILE in r248748, and it is safe for us to do the
same.

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