Add infrastructure to run tests on android.

mojo/tools/mojob.py

Index: mojo/tools/mojob.py
diff --git a/mojo/tools/mojob.py b/mojo/tools/mojob.py
index 03f48a80de90b66d69164521e427ab58ce5fc6ea..8c6043af592348fa3367534c851861568fdf9ecd 100755
--- a/mojo/tools/mojob.py
+++ b/mojo/tools/mojob.py
@@ -103,18 +103,25 @@ def run_unittests(args):
   out_dir = get_out_dir(args)
   print 'Running unit tests in %s ...' % out_dir
   command = ['python']
-  if platform.system() == 'Linux':
+  if platform.system() == 'Linux' and not args.android:
     command.append('./testing/xvfb.py')
     command.append(out_dir)
 
   command.append(os.path.join('mojo', 'tools', 'test_runner.py'))
-  command.append(os.path.join('mojo', 'tools', 'data', 'unittests'))
+  if args.android:
+    command.append('--android')
+    command.append(os.path.join('mojo', 'tools', 'data', 'android_unittests'))
+  else:
+    command.append(os.path.join('mojo', 'tools', 'data', 'unittests'))
   command.append(out_dir)
   command.append('mojob_test_successes')
   return subprocess.call(command)
 
 def run_apptests(args):
   out_dir = get_out_dir(args)
+  if args.android:
+    return 0
+
   print 'Running application tests in %s ...' % out_dir
   command = ['python']
   if platform.system() == 'Linux':
@@ -128,7 +135,7 @@ def run_apptests(args):
 
 def run_skytests(args):
   out_dir = get_out_dir(args)
-  if platform.system() != 'Linux':
+  if platform.system() != 'Linux' or args.android:
     return 0
 
   command = []
@@ -172,7 +179,7 @@ def run_pytests(args):
   if exit_code:
     return exit_code
 
-  if platform.system() != 'Linux':
+  if platform.system() != 'Linux' or args.android:
     print ('Python bindings tests are only supported on Linux.')
     return