error: '../../build/util/LASTCHANGE.blink', needed by 'gen/webkit_version.h', missing and no known rule to make it
解决方法:src目录下执行 python ./build/util/lastchange.py -s third_party/WebKit/ -o build/util/LASTCHANGE.blink
参考博客:http://blog.youkuaiyun.com/dopi/article/details/27662289