Mojo JS bindings: add support to generate "dual-mode" code.

chrome/browser/resources/usb_internals/usb_internals.js

Index: chrome/browser/resources/usb_internals/usb_internals.js
diff --git a/chrome/browser/resources/usb_internals/usb_internals.js b/chrome/browser/resources/usb_internals/usb_internals.js
index 1b324a4d4fdd70a0e04f14c7fd416b72a6a45ad7..28e3728b59b454aa579309e1035d5e1dd17abf05 100644
--- a/chrome/browser/resources/usb_internals/usb_internals.js
+++ b/chrome/browser/resources/usb_internals/usb_internals.js
@@ -23,8 +23,8 @@ function refreshDeviceList() {
       let remove = document.createElement('td');
       let removeButton = document.createElement('button');
       name.textContent = device.name;
-      serialNumber.textContent = device.serial_number;
-      landingPage.textContent = device.landing_page.url;
+      serialNumber.textContent = device.serialNumber;
+      landingPage.textContent = device.landingPage.url;
       removeButton.addEventListener('click', function() {
         pageHandler.removeDeviceForTesting(device.guid).then(refreshDeviceList);
       });
@@ -55,23 +55,14 @@ function addTestDevice(event) {
 }
 
 function initializeProxies() {
-  return importModules([
-           'chrome/browser/ui/webui/usb_internals/usb_internals.mojom',
-           'content/public/renderer/frame_interfaces',
-         ])
-      .then(function(modules) {
-        let mojom = modules[0];
-        let frameInterfaces = modules[1];
-
-        pageHandler = new mojom.UsbInternalsPageHandlerPtr(
-            frameInterfaces.getInterface(mojom.UsbInternalsPageHandler.name));
-      });
+  pageHandler = new mojom.UsbInternalsPageHandlerPtr;
+  Mojo.bindInterface(
+      mojom.UsbInternalsPageHandler.name, mojo.makeRequest(pageHandler).handle);
 }
 
 document.addEventListener('DOMContentLoaded', function() {
-  initializeProxies().then(function() {
-    $('add-test-device-form').addEventListener('submit', addTestDevice);
-    refreshDeviceList();
-  });
+  initializeProxies();

[dpapad, 2017/06/30 22:15:03]

Nit: Can we inline the contents of initializeProxies() here? I don't think it is
called anywhere else.

[yzshen1, 2017/06/30 22:37:31]

Done.

+  $('add-test-device-form').addEventListener('submit', addTestDevice);
+  refreshDeviceList();
 });
 })();