Make MIME boundary harder to accidentally match. This is just making the same change to the copy of upload.py that is in depot_tools.
Make MIME boundary harder to accidentally match.
This is just making the same change to the copy of upload.py that is in depot_tools.

BUG=419156
R=iannucci@chromium.org

Original Review URL: https://codereview.chromium.org/624513002

Review URL: https://codereview.chromium.org/639503002

git-svn-id: fd409f4bdeea2bb50a5d34bb4d4bfc2046a5a3dd@292432 0039d316-1c4b-4281-b951-d872f2087c98

eatbyte/depot_tools,aleonliao/depot_tools,withtone/depot_tools,CoherentLabs/depot_tools,airtimemedia/depot_tools,airtimemedia/depot_tools,eatbyte/depot_tools,fracting/depot_tools,duongbaoduy/gtools,npe9/depot_tools,chinmaygarde/depot_tools,duanwujie/depot_tools,chinmaygarde/depot_tools,npe9/depot_tools,Midrya/chromium,gcodetogit/depot_tools,ajohnson23/depot_tools,eatbyte/depot_tools,Midrya/chromium,duongbaoduy/gtools,liaorubei/depot_tools,xuyuhan/depot_tools,liaorubei/depot_tools,HackFisher/depot_tools,duanwujie/depot_tools,azunite/chrome_build,kaiix/depot_tools,sarvex/depot-tools,hsharsha/depot_tools,primiano/depot_tools,hsharsha/depot_tools,azunite/chrome_build,duanwujie/depot_tools,eatbyte/depot_tools,SuYiling/chrome_depot_tools,michalliu/chromium-depot_tools,mlufei/depot_tools,disigma/depot_tools,disigma/depot_tools,G-P-S/depot_tools,withtone/depot_tools,michalliu/chromium-depot_tools,kaiix/depot_tools,xuyuhan/depot_tools,mlufei/depot_tools,SuYiling/chrome_depot_tools,duongbaoduy/gtools,azunite/chrome_build,sarvex/depot-tools,fanjunwei/depot_tools,liaorubei/depot_tools,HackFisher/depot_tools,HackFisher/depot_tools,cpanelli/-git-clone-https-chromium.googlesource.com-chromium-tools-depot_tools,primiano/depot_tools,chinmaygarde/depot_tools,kaiix/depot_tools,G-P-S/depot_tools,mlufei/depot_tools,aleonliao/depot_tools,G-P-S/depot_tools,michalliu/chromium-depot_tools,cpanelli/-git-clone-https-chromium.googlesource.com-chromium-tools-depot_tools,liaorubei/depot_tools,CoherentLabs/depot_tools,disigma/depot_tools,HackFisher/depot_tools,ajohnson23/depot_tools,cpanelli/-git-clone-https-chromium.googlesource.com-chromium-tools-depot_tools,xuyuhan/depot_tools,sarvex/depot-tools,azureplus/chromium_depot_tools,npe9/depot_tools,npe9/depot_tools,G-P-S/depot_tools,primiano/depot_tools,fanjunwei/depot_tools,Midrya/chromium,michalliu/chromium-depot_tools,airtimemedia/depot_tools,azureplus/chromium_depot_tools,SuYiling/chrome_depot_tools,ajohnson23/depot_tools,withtone/depot_tools,fracting/depot_tools,gcodetogit/depot_tools,gcodetogit/depot_tools,hsharsha/depot_tools,azureplus/chromium_depot_tools,fanjunwei/depot_tools,xuyuhan/depot_tools,aleonliao/depot_tools,fanjunwei/depot_tools,fracting/depot_tools,airtimemedia/depot_tools,sarvex/depot-tools