restarting adb server before each testing start will cause conflict for multiple emulators

build/android/emulator.py

Index: build/android/emulator.py
diff --git a/build/android/emulator.py b/build/android/emulator.py
index d4f3caa409272f35f97022e1bf099f20ea08cc77..fb381b66bf9b9385a7dfb729ef0de0f44c3208be 100755
--- a/build/android/emulator.py
+++ b/build/android/emulator.py
@@ -149,6 +149,10 @@ class Emulator(object):
     return ('emulator-%d' % port, port)
 
   def _CreateAVD(self, avd_name):
+    """Creates an AVD with the given name.
+
+    Return avd_name if succeed.

[bulach, 2012/07/20 11:28:51]

nit: hmm, looks like it's never checking for any result and always returning the
avd_name regardless?

[Wei James(wistoch), 2012/07/20 12:48:25]

fixed. thanks

+    """
     avd_command = [
         self.android,
         '--silent',
@@ -166,9 +170,10 @@ class Emulator(object):
     avd_process.stdin.write('no\n')
     avd_process.wait()
     logging.info('Create AVD command: %s', ' '.join(avd_command))
-    return self.avd
+    return avd_name
 
   def _DeleteAVD(self):
+    """Delete the AVD of this emulator."""
     avd_command = [
         self.android,
         '--silent',