Move init() to Init() so that flag.Parse() can be called first.
Move init() to Init() so that flag.Parse() can be called first.

Otherwise the --log_dir flag doesn't affect where glog output goes to.

TBR=humper
BUG=skia:

Review URL: https://codereview.chromium.org/667493002

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keyZZZZ/platform_external_skia,AOSP-YU/platform_external_skia,jtg-gg/skia,jtg-gg/skia,pcwalton/skia,nvoron23/skia,samuelig/skia,TeamTwisted/external_skia,nfxosp/platform_external_skia,scroggo/skia,Jichao/skia,OneRom/external_skia,AOSPB/external_skia,geekboxzone/mmallow_external_skia,Infinitive-OS/platform_external_skia,spezi77/android_external_skia,noselhq/skia,AOSPB/external_skia,TeamExodus/external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,boulzordev/android_external_skia,chenlian2015/skia_from_google,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,boulzordev/android_external_skia,ominux/skia,aosp-mirror/platform_external_skia,vanish87/skia,YUPlayGodDev/platform_external_skia,shahrzadmn/skia,jtg-gg/skia,w3nd1go/android_external_skia,todotodoo/skia,MarshedOut/android_external_skia,timduru/platform-external-skia,pcwalton/skia,todotodoo/skia,vanish87/skia,nvoron23/skia,UBERMALLOW/external_skia,TeamTwisted/external_skia,rubenvb/skia,nfxosp/platform_external_skia,pcwalton/skia,qrealka/skia-hc,VRToxin-AOSP/android_external_skia,TeamTwisted/external_skia,BrokenROM/external_skia,vanish87/skia,samuelig/skia,VRToxin-AOSP/android_external_skia,geekboxzone/mmallow_external_skia,Jichao/skia,Hikari-no-Tenshi/android_external_skia,amyvmiwei/skia,ominux/skia,tmpvar/skia.cc,AOSPB/external_skia,MinimalOS-AOSP/platform_external_skia,TeamExodus/external_skia,samuelig/skia,geekboxzone/mmallow_external_skia,AOSPB/external_skia,w3nd1go/android_external_skia,MinimalOS-AOSP/platform_external_skia,qrealka/skia-hc,TeamTwisted/external_skia,Igalia/skia,shahrzadmn/skia,Hikari-no-Tenshi/android_external_skia,samuelig/skia,YUPlayGodDev/platform_external_skia,OneRom/external_skia,Infinitive-OS/platform_external_skia,invisiblek/android_external_skia,PAC-ROM/android_external_skia,MonkeyZZZZ/platform_external_skia,shahrzadmn/skia,DiamondLovesYou/skia-sys,nfxosp/platform_external_skia,TeamExodus/external_skia,boulzordev/android_external_skia,geekboxzone/mmallow_external_skia,aosp-mirror/platform_external_skia,pcwalton/skia,ominux/skia,qrealka/skia-hc,invisiblek/android_external_skia,MarshedOut/android_external_skia,ominux/skia,OneRom/external_skia,VRToxin-AOSP/android_external_skia,vanish87/skia,AOSP-YU/platform_external_skia,YUPlayGodDev/platform_external_skia,nvoron23/skia,chenlian2015/skia_from_google,scroggo/skia,geekboxzone/mmallow_external_skia,TeamExodus/external_skia,VRToxin-AOSP/android_external_skia,geekboxzone/mmallow_external_skia,boulzordev/android_external_skia,MarshedOut/android_external_skia,jtg-gg/skia,Igalia/skia,nfxosp/platform_external_skia,invisiblek/android_external_skia,todotodoo/skia,ominux/skia,vanish87/skia,PAC-ROM/android_external_skia,google/skia,OneRom/external_skia,nfxosp/platform_external_skia,MarshedOut/android_external_skia,google/skia,tmpvar/skia.cc,UBERMALLOW/external_skia,vanish87/skia,AOSPB/external_skia,tmpvar/skia.cc,AOSP-YU/platform_external_skia,qrealka/skia-hc,HalCanary/skia-hc,TeamTwisted/external_skia,AOSP-YU/platform_external_skia,DiamondLovesYou/skia-sys,rubenvb/skia,Igalia/skia,Infinitive-OS/platform_external_skia,qrealka/skia-hc,Jichao/skia,BrokenROM/external_skia,HalCanary/skia-hc,VRToxin-AOSP/android_external_skia,w3nd1go/android_external_skia,timduru/platform-external-skia,noselhq/skia,w3nd1go/android_external_skia,MonkeyZZZZ/platform_external_skia,Infinitive-OS/platform_external_skia,aosp-mirror/platform_external_skia,OneRom/external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,chenlian2015/skia_from_google,google/skia,DiamondLovesYou/skia-sys,VRToxin-AOSP/android_external_skia,chenlian2015/skia_from_google,MonkeyZZZZ/platform_external_skia,AOSP-YU/platform_external_skia,amyvmiwei/skia