Factor DEPS file to use Vars for common subexpression (thanks to Brad Nelson for suggesting this trick from O3D).  Also move the tools (third_party) versions up to 1054 (to get gcc-4.4.2 tar files).
Factor DEPS file to use Vars for common subexpression (thanks to Brad Nelson
for suggesting this trick from O3D).  Also move the tools (third_party) versions
up to 1054 (to get gcc-4.4.2 tar files).

Review URL: http://codereview.chromium.org/458001

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@1060 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client