Also enable PolyGerrit extension on staging.

Change-Id: I43bb48f8c62dbb3948a825be89b0c3b96d029037

background.js

diff --git a/background.js b/background.js
index 73ec736..337adc4 100644
--- a/background.js
+++ b/background.js
@@ -66,6 +66,9 @@
             new chrome.declarativeContent.PageStateMatcher({
               pageUrl: { hostSuffix: '-review.git.corp.google.com' },
             }),
+            new chrome.declarativeContent.PageStateMatcher({
+              pageUrl: { hostSuffix: '-review.staging-git.corp.google.com' },
+            }),
           ],
           // And shows the extension's page action.
           actions: [ new chrome.declarativeContent.ShowPageAction() ]
@@ -103,6 +106,7 @@
     urls: [
       '*://*.googlesource.com/*',
       "*://*.git.corp.google.com/*",
+      "*://*.staging-git.corp.google.com/*",
     ]
   }
 );

manifest.json

diff --git a/manifest.json b/manifest.json
index 7e0a2c7..ba60eb7 100644
--- a/manifest.json
+++ b/manifest.json
@@ -19,7 +19,8 @@
     {
       "matches": [
         "*://*.googlesource.com/*",
-        "*://*.git.corp.google.com/*"
+        "*://*.git.corp.google.com/*",
+        "*://*.staging-git.corp.google.com/*"
       ],
       "js": [
         "content.js"
@@ -32,7 +33,8 @@
     "tabs",
     "webRequest",
     "*://*.googlesource.com/*",
-    "*://*.git.corp.google.com/*"
+    "*://*.git.corp.google.com/*",
+    "*://*.staging-git.corp.google.com/*"
   ],
   "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'"
 }