vim: Add a ninja-powered "Compile this file" function.
vim: Add a ninja-powered "Compile this file" function.

BUG=none
TEST=`:so /path/to/src/tools/vim/ninja-build.vim`, hit cmd-k.

Review URL: https://chromiumcodereview.appspot.com/9231001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@117860 0039d316-1c4b-4281-b951-d872f2087c98

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