Add directory option for JUnit coverage files.

build/android/gyp/javac.py

Index: build/android/gyp/javac.py
diff --git a/build/android/gyp/javac.py b/build/android/gyp/javac.py
index 5722fb1d97a72dfbd63d8b9d1d94c5f7ca69c62e..09e8237404d09955ba27bb7e32a6e9f71b48e4e4 100755
--- a/build/android/gyp/javac.py
+++ b/build/android/gyp/javac.py
@@ -197,6 +197,10 @@ def _OnStaleMd5(changes, options, javac_cmd, java_files, classpath_inputs):
       # being in a temp dir makes it unstable (breaks md5 stamping).
       cmd = javac_cmd + ['-d', classes_dir] + java_files
 
+      if cmd[0].endswith('jmake'):
+        jar_args = '"%s"' % ' '.join(cmd[1:])
+        cmd = [cmd[0], '--jar-args', jar_args]
+
       # JMake prints out some diagnostic logs that we want to ignore.
       # This assumes that all compiler output goes through stderr.
       stdout_filter = lambda s: ''