gyp build of skfiddle apps, take 2

experimental/webtry/setup/continue_install

 #!/bin/bash
 #
 # Don't execute this script directly, instead it is copied into the webtry
 # user's directory and executed as the user webtry by the webtry_setup.sh
 # script.
 #
 # See the README file for detailed installation instructions.
 cd
 pwd
 
@@ skipping 12 matching lines @@
   wget https://go.googlecode.com/files/go1.2.1.linux-amd64.tar.gz
   tar -xzf go1.2.1.linux-amd64.tar.gz
 fi
 export GOROOT=$HOME/go
 mkdir=$HOME/golib
 export GOPATH=$HOME/golib
 
 export PATH=$PATH:$GOROOT/bin
 
 mkdir /home/webtry/cache
+mkdir /home/webtry/cache/src
 mkdir /home/webtry/inout
 chmod 777 /home/webtry/inout
 
 # Sometimes you need to test patches on the server, to do that uncomment
 # the following commented out lines and update the PATCH env variable to the
 # name of the codereview to use.
 
 # rm -rf skia
 
 # Checkout the skia code and dependencies.
 mkdir skia
 cd skia
 gclient config --name . https://skia.googlesource.com/skia.git
 gclient sync
 git checkout master
 
 # PATCH=issue196723021_100001.diff
 # rm $PATCH
 # wget https://codereview.chromium.org/download/$PATCH
 # git apply $PATCH
 
 GYP_GENERATORS=ninja ./gyp_skia gyp/webtry.gyp gyp/most.gyp -Dskia_gpu=0
 ninja -C out/Debug webtry
 
 cd experimental/webtry
 
 go get -d
 go build webtry.go