Lazy load chrome.* APIs

chrome/renderer/resources/extensions/send_request.js

Index: chrome/renderer/resources/extensions/send_request.js
diff --git a/chrome/renderer/resources/extensions/send_request.js b/chrome/renderer/resources/extensions/send_request.js
index d689a5b0283d535c74da541cd7a4d2382a187db8..1e5746f9ea712ad2b1489db8d034048e2524e595 100644
--- a/chrome/renderer/resources/extensions/send_request.js
+++ b/chrome/renderer/resources/extensions/send_request.js
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+var DCHECK = requireNative('logging').DCHECK;
 var json = require('json');
 var lastError = require('lastError');
 var natives = requireNative('sendRequest');
@@ -14,6 +15,7 @@ chromeHidden.handleResponse = function(requestId, name,
                                        success, responseList, error) {
   try {
     var request = requests[requestId];
+    DCHECK(request != null);
     if (success) {
       lastError.clear();
     } else {
@@ -32,7 +34,7 @@ chromeHidden.handleResponse = function(requestId, name,
     if (request.callback) {
       // Validate callback in debug only -- and only when the
       // caller has provided a callback. Implementations of api
-      // calls my not return data if they observe the caller
+      // calls may not return data if they observe the caller
       // has not provided a callback.
       if (chromeHidden.validateCallbacks && !error) {
         try {