Make sure skyanalyzer uses absolute paths to construct url-mappings for dartanalyzer
Make sure skyanalyzer uses absolute paths to construct url-mappings for
dartanalyzer

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1215883006.

jianglu/mojo,jianglu/mojo,jianglu/mojo,afandria/mojo,jianglu/mojo,chinmaygarde/mojo,chinmaygarde/mojo,afandria/mojo,chinmaygarde/mojo,afandria/mojo,chinmaygarde/mojo,afandria/mojo,chinmaygarde/mojo,jianglu/mojo,afandria/mojo,jianglu/mojo,afandria/mojo,chinmaygarde/mojo,jianglu/mojo,afandria/mojo,jianglu/mojo,chinmaygarde/mojo,chinmaygarde/mojo,chinmaygarde/mojo,afandria/mojo