Make miscellaneous_bindings and event_bindings Required as needed. Previously

chrome/renderer/resources/extensions/binding.js

Index: chrome/renderer/resources/extensions/binding.js
diff --git a/chrome/renderer/resources/extensions/binding.js b/chrome/renderer/resources/extensions/binding.js
index 68f52f981a4d26aa97a7fdd737c571dfb142b7a8..62d614407ba66fd7fa4eab7e85500721ff574409 100644
--- a/chrome/renderer/resources/extensions/binding.js
+++ b/chrome/renderer/resources/extensions/binding.js
@@ -2,10 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-require('json_schema');
-require('event_bindings');
 var chrome = requireNative('chrome').GetChrome();
-var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+var Event = require('event_bindings').Event;
 var forEach = require('utils').forEach;
 var GetAvailability = requireNative('v8_context').GetAvailability;
 var logging = requireNative('logging');
@@ -293,9 +291,8 @@ Binding.prototype = {
         // TODO(aa): It would be best to run this in a unit test, but in order
         // to do that we would need to better factor this code so that it
         // doesn't depend on so much v8::Extension machinery.
-        if (chromeHidden.validateAPI &&
-            schemaUtils.isFunctionSignatureAmbiguous(
-                apiFunction.definition)) {
+        if (logging.DCHECK_IS_ON() &&
+            schemaUtils.isFunctionSignatureAmbiguous(apiFunction.definition)) {
           throw new Error(
               apiFunction.name + ' has ambiguous optional arguments. ' +
               'To implement custom disambiguation logic, add ' +
@@ -328,9 +325,8 @@ Binding.prototype = {
           }
           sendRequestHandler.clearCalledSendRequest();
 
-          // Validate return value if defined - only in debug.
-          if (chromeHidden.validateCallbacks &&
-              this.definition.returns) {
+          // Validate return value if in sanity check mode.
+          if (logging.DCHECK_IS_ON() && this.definition.returns) {
             schemaUtils.validate([retval], [this.definition.returns]);
           }
           return retval;
@@ -363,9 +359,9 @@ Binding.prototype = {
               eventName, eventDef.parameters, eventDef.extraParameters,
               options);
         } else if (eventDef.anonymous) {
-          mod[eventDef.name] = new chrome.Event();
+          mod[eventDef.name] = new Event();
         } else {
-          mod[eventDef.name] = new chrome.Event(
+          mod[eventDef.name] = new Event(
               eventName, eventDef.parameters, options);
         }
       }, this);