<webview>: Implement WebRequest API

chrome/renderer/resources/extensions/web_view.js

Index: chrome/renderer/resources/extensions/web_view.js
diff --git a/chrome/renderer/resources/extensions/web_view.js b/chrome/renderer/resources/extensions/web_view.js
index 73f4f1af30fd11ea1ec80dd466bb55b15eb1b0c0..c2fe3ef232f08b1599a2f8551d5c2ac5a0505d2b 100644
--- a/chrome/renderer/resources/extensions/web_view.js
+++ b/chrome/renderer/resources/extensions/web_view.js
@@ -7,6 +7,8 @@
 // The actual tag is implemented via the browser plugin. The internals of this
 // are hidden via Shadow DOM.
 
+var webRequestEvent = require('webRequest').webRequestEvent;
+
 var watchForTag = require("tagWatcher").watchForTag;
 
 var WEB_VIEW_ATTRIBUTES = ['name', 'src', 'partition', 'autosize', 'minheight',
@@ -36,6 +38,18 @@ var WEB_VIEW_EVENTS = {
   'sizechanged': ['oldHeight', 'oldWidth', 'newHeight', 'newWidth'],
 };
 
+var WEB_REQUEST_EVENTS = [
+  'onBeforeRequest',
+  'onBeforeSendHeaders',
+  'onSendHeaders',
+  'onHeadersReceived',
+  'onAuthRequired',
+  'onBeforeRedirect',
+  'onResponseStarted',
+  'onCompleted',
+  'onErrorOccurred'
+];
+
 window.addEventListener('DOMContentLoaded', function() {
   watchForTag('WEBVIEW', function(addedNode) { new WebView(addedNode); });
 });
@@ -60,6 +74,7 @@ function WebView(node) {
           attributeName, this.node_.getAttribute(attributeName));
     }
   }, this);
+  this.onBeforeRequest_ = null;
 
   shadowRoot.appendChild(this.objectNode_);
 
@@ -113,6 +128,23 @@ function WebView(node) {
 
   // We cannot use {writable: true} property descriptor because we want dynamic
   // getter value.
+  WEB_REQUEST_EVENTS.forEach(function(eventName) {
+    Object.defineProperty(this.node_, eventName, {
+      get: function() {
+        if (!self[eventName + '_']) {
+          self[eventName + '_'] =
+              new webRequestEvent(
+                  'webRequest.' + eventName, null, {}, null,

[Matt Perry, 2013/02/05 00:47:25]

right here, you could use a different prefix for the event. probably "webview.".
If the app already needs "webview" permission, this should work.

+                  self.objectNode_.getProcessId(),
+                  self.objectNode_.getRouteId());
+        }
+        return self[eventName + '_'];
+      },
+      // No setter.
+      enumerable: true
+    });
+  }, this);
+
   Object.defineProperty(this.node_, 'contentWindow', {
     get: function() {
       // TODO(fsamuel): This is a workaround to enable