Add read-only access to POST data for webRequest's onBeforeRequest

chrome/test/data/extensions/api_test/webrequest/manifest.json

Index: chrome/test/data/extensions/api_test/webrequest/manifest.json
diff --git a/chrome/test/data/extensions/api_test/webrequest/manifest.json b/chrome/test/data/extensions/api_test/webrequest/manifest.json
index 7f2a046129be642d3d6010c8cd49441f5cb9bbeb..43ef155651140927e89a73fcff25062cd4c46dd2 100644
--- a/chrome/test/data/extensions/api_test/webrequest/manifest.json
+++ b/chrome/test/data/extensions/api_test/webrequest/manifest.json
@@ -9,6 +9,10 @@
     "simpleLoad/a.html",
     "complexLoad/a.html",
     "complexLoad/b.html",
-    "does_not_exist.html"
+    "does_not_exist.html",
+    "postData/multipart.html",
+    "postData/no-enctype.html",
+    "postData/plaintext.html",
+    "postData/urlencoded.html"
   ]
 }