add --rasterPDF flag to DM
add --rasterPDF flag to DM

If no rasterizer is compiled in, this flag does nothing.  Default
value (true) gives the same behavior as before.

Review URL: https://codereview.chromium.org/830333005

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