Do not use shell for tools take defines in the command line. Angle brackets are passed in the value of GR_GL_CUSTOM_SETUP_HEADER breaking subprocess.Popen when shell=True. 
Do not use shell for tools take defines in the command line. Angle brackets are passed in the value of GR_GL_CUSTOM_SETUP_HEADER breaking subprocess.Popen when shell=True. 

Code review: https://chromiumcodereview.appspot.com/10836144/

BUG=chromium:141132

witwall/gyp,witwall/gyp,witwall/gyp,witwall/gyp,witwall/gyp