[chrome_remote_control] Use monkey patching for stubs.

tools/chrome_remote_control/chrome_remote_control/adb_commands.py

Index: tools/chrome_remote_control/chrome_remote_control/adb_commands.py
diff --git a/tools/chrome_remote_control/chrome_remote_control/adb_commands.py b/tools/chrome_remote_control/chrome_remote_control/adb_commands.py
index 4fbf286b8b4ea4e73cf866d3ece9bf4d1e50eaaa..91c3709a4dad2f05d3a15ca4fbc5ce51b951cc1e 100644
--- a/tools/chrome_remote_control/chrome_remote_control/adb_commands.py
+++ b/tools/chrome_remote_control/chrome_remote_control/adb_commands.py
@@ -17,27 +17,27 @@ sys.path.append(
         os.path.join(os.path.dirname(__file__),
                      '../../../build/android')))
 try:
-  from pylib import android_commands as real_android_commands
+  from pylib import android_commands
   from pylib import forwarder
   from pylib import valgrind_tools
 except:
-  real_android_commands = None
+  android_commands = None
 
 def IsAndroidSupported():
-  return real_android_commands != None
+  return android_commands != None
 
 def GetAttachedDevices():
   """Returns a list of attached, online android devices.
 
   If a preferred device has been set with ANDROID_SERIAL, it will be first in
   the returned list."""
-  return real_android_commands.GetAttachedDevices()
+  return android_commands.GetAttachedDevices()
 
 class ADBCommands(object):
   """A thin wrapper around ADB"""
 
   def __init__(self, device):
-    self._adb = real_android_commands.AndroidCommands(device)
+    self._adb = android_commands.AndroidCommands(device)
 
   def Forward(self, local, remote):
     ret = self._adb._adb.SendCommand('forward %s %s' % (local, remote))