iPhoneのChromeで<input readonly>をコピー

gistfile1.txt

{\rtf1\ansi\ansicpg1252
{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
{\colortbl;\red255\green255\blue255;\red85\green85\blue85;\red252\green252\blue255;\red51\green51\blue51;
\red221\green221\blue221;}
\deftab720

\itap1\trowd \taflags0 \trgaph108\trleft-108 \trbrdrt\brdrnil \trbrdrl\brdrnil \trbrdrt\brdrnil \trbrdrr\brdrnil 
\clvertalt \clshdrawnil \clwWidth4620\clftsWidth3 \clmart10 \clmarl10 \clmarb10 \clmarr10 \clbrdrt\brdrs\brdrw20\brdrcf5 \clbrdrl\brdrnil \clbrdrb\brdrnil \clbrdrr\brdrnil \clpadt160 \clpadl160 \clpadb160 \clpadr160 \gaph\cellx8640
\pard\intbl\itap1\pardeftab720\partightenfactor0

\f0\fs28 \cf2 \cb3 \expnd0\expndtw0\kerning0
\outl0\strokewidth0 \strokec2 hogehoge \cell \lastrow\row
}