First pass at automated vs2013 toolchain script

First pass at automated vs2013 toolchain script

d:\src>python cr\src\tools\win\toolchain\toolchain2013.py
...
d:\src>d:\src\win_toolchain_2013\env
...
d:\src>cd cr\src
d:\src\cr\src>gclient runhooks
...
d:\src\cr\src>ninja -C out\Debug chrome

Can also pass --express to toolchain2013.py for Express toolchain.

BUG=309197
R=zturner@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=234244

[zturner, 2013-11-11 17:42:03]

On 2013/11/08 21:44:40, scottmg wrote:

lgtm

[scottmg, 2013-11-11 18:33:17]

Committed patchset #4 manually as r234244 (presubmit successful).