Use proguard.cfg in cronet sample apk.

components/cronet/tools/cr_cronet.py

Index: components/cronet/tools/cr_cronet.py
diff --git a/components/cronet/tools/cr_cronet.py b/components/cronet/tools/cr_cronet.py
index ae971442e0fddad414b2525e024eba1a6fa0ade8..8dc48437b450dfb43fdbe4f026018fe029c889da 100755
--- a/components/cronet/tools/cr_cronet.py
+++ b/components/cronet/tools/cr_cronet.py
@@ -18,31 +18,38 @@ def run(command):
 def main():
   parser = argparse.ArgumentParser()
   parser.add_argument('command',
-                      choices=['init',
+                      choices=['gyp',
                                'sync',
                                'build',
                                'install',
                                'test',
                                'debug'])
+  parser.add_argument('-r', '--release', action='store_true',
+                      help='use release configuration')
 
   options = parser.parse_args()
   print options
-  print options.command
   gyp_defines = 'GYP_DEFINES="OS=android enable_websockets=0 '+ \
       'disable_file_support=1 disable_ftp_support=1 '+ \
       'use_icu_alternatives_on_android=1" '
+  out_dir = 'out/Debug'
+  release_arg = ''
+  if options.release:
+    out_dir = 'out/Release'
+    release_arg = ' --release'
 
-  if (options.command=='init'):
+  if (options.command=='gyp'):
     return run (gyp_defines + ' gclient runhooks')
   if (options.command=='sync'):
     return run ('git pull --rebase && ' + gyp_defines + ' gclient sync')
   if (options.command=='build'):
-    return run ('ninja -C out/Debug cronet_sample_test_apk')
+    return run ('ninja -C ' + out_dir + ' cronet_sample_test_apk')
   if (options.command=='install'):
-    return run ('build/android/adb_install_apk.py --apk=CronetSample.apk')
+    return run ('build/android/adb_install_apk.py ' + release_arg + \
+                ' --apk=CronetSample.apk')
   if (options.command=='test'):
     return run ('build/android/test_runner.py instrumentation '+ \
-                '--test-apk=CronetSampleTest')
+                release_arg + ' --test-apk=CronetSampleTest')
 
   parser.print_help()
   return 1