Add scheme exceptions for isSecureContext

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

Index: chrome/test/data/extensions/api_test/webrtc_from_web_accessible_resource/manifest.json
diff --git a/chrome/test/data/extensions/api_test/native_messaging/manifest.json b/chrome/test/data/extensions/api_test/webrtc_from_web_accessible_resource/manifest.json
similarity index 55%
copy from chrome/test/data/extensions/api_test/native_messaging/manifest.json
copy to chrome/test/data/extensions/api_test/webrtc_from_web_accessible_resource/manifest.json
index f7d8507fb7170948c04a33b3e6d5ee46cb5c3222..b0e690adb6e809f85835206ea3875c553931ff32 100644
--- a/chrome/test/data/extensions/api_test/native_messaging/manifest.json
+++ b/chrome/test/data/extensions/api_test/webrtc_from_web_accessible_resource/manifest.json
@@ -3,12 +3,14 @@
   "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDcBHwzDvyBQ6bDppkIs9MP4ksKqCMyXQ/A52JivHZKh4YO/9vJsT3oaYhSpDCE9RPocOEQvwsHsFReW2nUEc6OLLyoCFFxIb7KkLGsmfakkut/fFdNJYh0xOTbSN8YvLWcqph09XAY2Y/f0AL7vfO1cuCqtkMt8hFrBGWxDdf9CQIDAQAB",
   "version": "1.0.0.0",
   "manifest_version": 2,
-  "name": "native messaging test",
-  "description": "Test the basic functionality of passing native messages.",
+  "name": "getUserMedia Use in Extension Resource",
+  "description": "Test getUserMedia use in a web accessible resource nested in an insecure context.",
   "background": {
     "scripts": ["test.js"]
   },
-  "permissions": [
-    "nativeMessaging"
-  ]
+  "content_scripts": [{
+    "matches": ["http://a.com/*"],
+    "js": ["content-script.js"]
+  }],
+  "web_accessible_resources": ["iframe-content.html"]
 }