roll gyp 1101:1103
roll gyp 1101:1103

1102: Lots of python style cleanups; let gyp-mac-tool use `/usr/bin/env python`.
1103: Add pylint presubmit check.

BUG=none
TEST=none
TBR=mark

Review URL: http://codereview.chromium.org/8822020

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@113272 0039d316-1c4b-4281-b951-d872f2087c98

gavinp/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,adobe/chromium,adobe/chromium,adobe/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,gavinp/chromium,adobe/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,gavinp/chromium,adobe/chromium,yitian134/chromium,yitian134/chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,ropik/chromium,ropik/chromium,gavinp/chromium