It worked for me by pasting all of the copy from Hearthstone. I will note, it didn't work when I was on the warrior page. I had to be on the deckbuilder page with no classes selected and paste in there. Here is what I pasted for it to work.
### Custom Warrior2
# Class: Warrior
# Format: Wild
#
# 2x (1) Shield Slam
# 2x (1) Upgrade!
# 1x (2) Bring It On!
# 2x (2) Cleave
# 2x (2) Execute
# 1x (2) Heroic Strike
# 2x (2) Revenge
# 2x (2) Ritual Chopper
# 2x (2) Woodcutter's Axe
# 2x (3) Awaken!
# 2x (3) Rabid Worgen
# 2x (3) Shield Block
# 2x (4) Blood Razor
# 2x (4) Death's Bite
# 2x (4) Devoted Maniac
# 1x (5) Brawl
# 1x (7) Galakrond, the Unbreakable
#
AAEBAQcES+8H8dMCxcADDf8DogSRBqwH/weNDvgRzM0CuuwCl/MC2q0Dqq8D0q8DAA==
#
# To use this deck, copy it to your clipboard and create a new deck in Hearthstone
3