[build/android] Fix device.RunShellCommand usages

build/android/incremental_install/installer.py

 #!/usr/bin/env python
 #
 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Install *_incremental.apk targets as well as their dependent files."""
 
 import argparse
 import glob
@@ skipping 178 matching lines @@
 
   # Create 2 lock files:
   # * install.lock tells the app to pause on start-up (until we release it).
   # * firstrun.lock is used by the app to pause all secondary processes until
   #   the primary process finishes loading the .dex / .so files.
   def create_lock_files():
     # Creates or zeros out lock files.
     cmd = ('D="%s";'
            'mkdir -p $D &&'
            'echo -n >$D/install.lock 2>$D/firstrun.lock')
-    device.RunShellCommand(cmd % device_incremental_dir, check_return=True)
+    device.RunShellCommand(
+        cmd % device_incremental_dir, shell=True, check_return=True)
 
   # The firstrun.lock is released by the app itself.
   def release_installer_lock():
     device.RunShellCommand('echo > %s/install.lock' % device_incremental_dir,
-                           check_return=True)
+                           check_return=True, shell=True)
 
   # Concurrency here speeds things up quite a bit, but DeviceUtils hasn't
   # been designed for multi-threading. Enabling only because this is a
   # developer-only tool.
   setup_timer = _Execute(
       use_concurrency, create_lock_files, restore_cache, check_selinux)
 
   _Execute(use_concurrency, do_install, do_push_files)
 
   finalize_timer = _Execute(use_concurrency, release_installer_lock, save_cache)
@@ skipping 92 matching lines @@
   else:
     Install(device, apk, split_globs=args.splits, native_libs=args.native_libs,
             dex_files=args.dex_files, enable_device_cache=args.cache,
             use_concurrency=args.threading,
             show_proguard_warning=args.show_proguard_warning,
             allow_downgrade=args.allow_downgrade)
 
 
 if __name__ == '__main__':
   sys.exit(main())