Chromoting: Use different jscompile stamp files for v1 and v2 webapps.

remoting/remoting_webapp.gypi

 # Copyright 2014 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.
 #
 # File included in remoting_webapp_* targets in remoting_client.gypi
 
 {
   'type': 'none',
   'variables': {
     'extra_files%': [],
     'generated_html_files': [
       '<(SHARED_INTERMEDIATE_DIR)/main.html',
       '<(SHARED_INTERMEDIATE_DIR)/wcs_sandbox.html',
       '<(SHARED_INTERMEDIATE_DIR)/background.html',
     ],
   },
   'dependencies': [
     'remoting_resources',
     'remoting_webapp_html',
   ],
   'conditions': [
     ['run_jscompile != 0', {
       'variables': {
-        'success_stamp': '<(PRODUCT_DIR)/remoting_webapp_jscompile.stamp',
+        'success_stamp': '<(PRODUCT_DIR)/<(_target_name)_jscompile.stamp',
       },
       'actions': [
         {
           'action_name': 'Verify remoting webapp',
           'inputs': [
             '<@(remoting_webapp_all_js_files)',
             '<@(remoting_webapp_js_proto_files)',
           ],
           'outputs': [
             '<(success_stamp)',
@@ skipping 34 matching lines @@
         'webapp/manifest.json.jinja2',
         '<(webapp_type)',
         '<@(generated_html_files)',
         '<@(remoting_webapp_files)',
         '<@(extra_files)',
         '--locales', '<@(remoting_webapp_locale_files)',
       ],
     },
   ],
 }