Arms warrior is a utility spec, it brings [Trauma], increasing bleed damage by 30% and [Blood frenzy] increasing physical damage done by all targets by 4%. The overall damage it can increase will depend on the composition of the raid, however, for 10 man the raw difference between Fury and Arms will make arms lacking. The DPS difference between Fury and Arms are considerable, because of that it is seen mostly has a PVP spec.
Talents for Arms Warrior Wotlk

Glyphs
Major
Glyph of Bladestorm
Glyph of Mortal Strike
Glyph of Heroic Strike
Minor
Glyph of Bloodrage
Glyph of Battle
Glyph of Enduring Victory
