Roll gyp 1828:1830

r1830 - generator output should be relative to depth
r1829 - win msvs: make express editions not use x64-x64 compiler

BUG=none
TBR=joi@chromium.org

Review URL: https://codereview.chromium.org/127953002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243560 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243561 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243561