Add a new script forked_adb_logcat_monitor.py.

build/android/adb_logcat_monitor.py

Index: build/android/adb_logcat_monitor.py
diff --git a/build/android/adb_logcat_monitor.py b/build/android/adb_logcat_monitor.py
index 0464b5303c1e04a422785260faf77553dd77fa9f..c69463ca0ad2f92f9535275caa351bb5e56e6e66 100755
--- a/build/android/adb_logcat_monitor.py
+++ b/build/android/adb_logcat_monitor.py
@@ -94,17 +94,8 @@ def GetAttachedDevices(adb_cmd):
     signal.alarm(0)
 
 
-def main(base_dir, adb_cmd='adb'):
+def SpawnLogcatWatchers(base_dir, adb_cmd='adb'):
   """Monitor adb forever.  Expects a SIGINT (Ctrl-C) to kill."""
-  # Spawn a detached child process.
-  pid = os.fork()
-  if pid > 0:
-    os._exit(os.EX_OK)
-  elif pid < 0:
-    sys.exit('Unable to spawn a detached child process.')
-  os.setsid()
-  # The rest happens in the child process.
-
   # We create the directory to ensure 'run once' semantics
   if os.path.exists(base_dir):
     print 'adb_logcat_monitor: %s already exists? Cleaning' % base_dir
@@ -160,6 +151,6 @@ def main(base_dir, adb_cmd='adb'):
 if __name__ == '__main__':
   if 2 <= len(sys.argv) <= 3:
     print 'adb_logcat_monitor: Initializing'
-    sys.exit(main(*sys.argv[1:3]))
+    sys.exit(SpawnLogcatWatchers(*sys.argv[1:3]))
 
   print 'Usage: %s <base_dir> [<adb_binary_path>]' % sys.argv[0]