Add a minimum required version to the webapp manifest to ensure that native messaging is supported.

remoting/webapp/appsv2.patch

 diff --git a/remoting/webapp/manifest.json b/remoting/webapp/manifest.json
 index d1f8d1f..67bf660 100644
 --- a/manifest.json
 +++ b/manifest.json
-@@ -5,30 +5,15 @@
-   "manifest_version": 2,
+@@ -6,30 +6,15 @@
    "default_locale": "en",
+   "minimum_chrome_version": "32",
    "app": {
 -    "launch": {
 -      "local_path": "main.html"
 -    }
 -  },
 +    "background": {
 +      "scripts": ["background.js"]
 +     }
 +   },
    "icons": {
@@ skipping 12 matching lines @@
 -      "matches": [
 -        "THIRD_PARTY_AUTH_REDIRECT_URL"
 -      ],
 -      "js": [ "cs_third_party_auth_trampoline.js" ]
 -    }
 -  ],
 -  "content_security_policy": "default-src 'self'; script-src 'self' TALK_GADGET_HOST; style-src 'self' https://fonts.googleapis.com; img-src 'self' TALK_GADGET_HOST; font-src *; connect-src 'self' OAUTH2_ACCOUNTS_HOST GOOGLE_API_HOSTS TALK_GADGET_HOST https://relay.google.com",
    "optional_permissions": [
      "<all_urls>"
    ],
-@@ -42,16 +28,22 @@
+@@ -43,16 +29,22 @@
      "clipboardRead",
      "clipboardWrite",
 -    "nativeMessaging"
 +    "nativeMessaging",
 +    "fullscreen",
 +    "identity",
 +    "contextMenus"
    ],
 -  "plugins": [
 -    { "path": "remoting_host_plugin.dll", "public": false },
 -    { "path": "libremoting_host_plugin.ia32.so", "public": false },
 -    { "path": "libremoting_host_plugin.x64.so", "public": false },
 -    { "path": "remoting_host_plugin.plugin", "public": false }
 -  ],
 +  "oauth2": {
 +    "client_id": "REMOTING_IDENTITY_API_CLIENT_ID",
 +    "scopes": [
 +      "https://www.googleapis.com/auth/chromoting https://www.googleapis.com/auth/googletalk https://www.googleapis.com/auth/userinfo#email"
 +    ]
 +  },
    "requirements": {
      "plugins": {
        "npapi": false
      }
 +  },
 +  "sandbox": {
 +    "pages": [ "wcs_sandbox.html" ]
    }
  }