Implement <appview>

extensions/renderer/resources/app_runtime_custom_bindings.js

Index: extensions/renderer/resources/app_runtime_custom_bindings.js
diff --git a/extensions/renderer/resources/app_runtime_custom_bindings.js b/extensions/renderer/resources/app_runtime_custom_bindings.js
index f4fe24dbb67e216f91b27eeaee69b666530e099a..267ba0931fad9d4f164ac54d70f0d4dd58e18767 100644
--- a/extensions/renderer/resources/app_runtime_custom_bindings.js
+++ b/extensions/renderer/resources/app_runtime_custom_bindings.js
@@ -6,6 +6,8 @@
 
 var binding = require('binding').Binding.create('app.runtime');
 
+var AppViewInternal =
+    require('binding').Binding.create('appViewInternal').generate();
 var eventBindings = require('event_bindings');
 var fileSystemHelpers = requireNative('file_system_natives');
 var GetIsolatedFileSystem = fileSystemHelpers.GetIsolatedFileSystem;
@@ -15,6 +17,22 @@ var SerializeToString = appNatives.SerializeToString;
 var CreateBlob = appNatives.CreateBlob;
 var entryIdManager = require('entryIdManager');
 
+eventBindings.registerArgumentMassager('app.runtime.onEmbedRequested',
+    function(args, dispatch) {
+  var appEmbeddingRequest = args[0];
+  var id = appEmbeddingRequest.guestInstanceId;
+  delete appEmbeddingRequest.guestInstanceId;
+  appEmbeddingRequest.allow = function(url) {
+    AppViewInternal.attachFrame(url, id);
+  };
+
+  appEmbeddingRequest.deny = function() {
+    AppViewInternal.denyRequest(id);
+  };
+
+  dispatch([appEmbeddingRequest]);
+});
+
 eventBindings.registerArgumentMassager('app.runtime.onLaunched',
     function(args, dispatch) {
   var launchData = args[0];