Add frameId to MessageSender (extension messaging API)

chrome/test/data/extensions/api_test/messaging/connect/page.js

Index: chrome/test/data/extensions/api_test/messaging/connect/page.js
diff --git a/chrome/test/data/extensions/api_test/messaging/connect/page.js b/chrome/test/data/extensions/api_test/messaging/connect/page.js
index 1e3a7e8eb3dcc68b0c9b3f2f7ba8204ef1819a7a..723cbfbc78e7ddf62f5e6ce6a32438f0753b2b43 100644
--- a/chrome/test/data/extensions/api_test/messaging/connect/page.js
+++ b/chrome/test/data/extensions/api_test/messaging/connect/page.js
@@ -29,6 +29,8 @@ chrome.runtime.onConnect.addListener(function(port) {
       testPostMessageFromTab(port);
     } else if (msg.testSendMessageFromTab) {
       testSendMessageFromTab();
+    } else if (msg.testSendMessageFromFrame) {
+      testSendMessageFromFrame();
     } else if (msg.testDisconnect) {
       port.disconnect();
     } else if (msg.testDisconnectOnClose) {
@@ -65,6 +67,13 @@ function testSendMessageFromTab() {
   });
 }
 
+function testSendMessageFromFrame() {
+  var f = document.createElement('iframe');
+  f.src = '?frame_test';

[not at google - send to devlin, 2014/11/10 18:36:42]

Where is this 'frame_test' used?

[robwu, 2014/11/10 21:43:07]

In frame.js. I've clarified the comment two lines below.

+  document.body.appendChild(f);
+  // The test will continue in frame.js.
+}
+
 // Tests sendMessage to an invalid extension.
 function testSendMessageFromTabError() {
   // try sending a request to a bad extension id