Remove content from public_headers.
Remove content from public_headers.

The file is unused, but we cannot safely delete it until we remove
the reference in a chromium gyp file.

BUG=skia:2350

Review URL: https://codereview.chromium.org/663913003

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