Revert of Add test for new FrontBufferedStream behavior. (patchset #1 id:1 of https://codereview.chromium.org/641813009/)
Revert of Add test for new FrontBufferedStream behavior. (patchset #1 id:1 of https://codereview.chromium.org/641813009/)

Reason for revert:
Test is SkASSERTing on Macs, e.g:

http://chromegw.corp.google.com/i/client.skia/builders/Test-Mac10.6-MacMini4.1-GeForce320M-x86_64-Debug/builds/257/steps/dm/logs/stdio

210 tasks left	1737M peak	    1ms	test FrontBufferedStream../../src/ports/SkImageDecoder_CG.cpp:43: failed assertion "data"

Signal 11:
_sigtramp (+0x1a)
SkStreamToCGImageSource(SkStream*) (+0x62)
SkImageDecoder_CG::onDecode(SkStream*, SkBitmap*, SkImageDecoder::Mode) (+0x2e)
SkImageDecoder::decode(SkStream*, SkBitmap*, SkColorType, SkImageDecoder::Mode) (+0x81)
SkImageDecoder::DecodeStream(SkStreamRewindable*, SkBitmap*, SkColorType, SkImageDecoder::Mode, SkImageDecoder::Format*) (+0xff)
SkImageDecoder::DecodeStream(SkStreamRewindable*, SkBitmap*) (+0x31)
test_ShortFrontBufferedStream(skiatest::Reporter*) (+0x97)
skiatest::ShortFrontBufferedStreamClass::onRun(skiatest::Reporter*) (+0x19)
skiatest::Test::run() (+0x7c)
DM::CpuTestTask::draw() (+0x5a)
DM::CpuTask::run() (+0x9e)
non-virtual thunk to DM::CpuTask::run() (+0x1c)
(anonymous namespace)::ThreadPool::Loop(void*) (+0xf4)
thread_start(void*) (+0x54)
_pthread_start (+0x14b)

Original issue's description:
> Add test for new FrontBufferedStream behavior.
>
> Test for https://skia.googlesource.com/skia/+/dd5a1e094c19fa10202c37c50a1f799e5af5dac0
>
> Verify that FrontBufferedStream does not attempt to read beyond the
> end of its underlying stream.
>
> Committed: https://skia.googlesource.com/skia/+/da59f05c6738dbb9a92cad21c608cdfae53a76b2

TBR=reed@google.com,scroggo@google.com
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/649553003

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