Fix minor undercounting in SkRecord::bytesUsed().
Fix minor undercounting in SkRecord::bytesUsed().

When an SkRecord has more than kInlineRecords ops in it (today, 5 or more), the
current logic undercounts the bytes used by the SkRecord by sizeof(Record) *
kInlineRecords, i.e. 32 bytes.  This isn't a huge deal... by the time you've
recorded 5 ops, we're typically up around 1KB anyway, and it's only ever off by
that constant 32 bytes, so somewhere between 3% to 0% error as the picture grows.

But now that I've noticed, we might as well fix it.  Basically, this is a
reminder that the inline space used to store those first kInlineRecords ops
goes to waste once we pass that threshold.  In contrast, fInlineAlloc, the
space we preallocate for the SkVarAlloc, never goes to waste.  It always holds
the first few ops' data even when we grow past it.

BUG=skia:

Review URL: https://codereview.chromium.org/1081433002

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