<webview>: First stab at implementing media permission request for guests.

chrome/test/data/extensions/platform_apps/web_view/media_access/embedder_has_permission/embedder.js

Index: chrome/test/data/extensions/platform_apps/web_view/media_access/embedder_has_permission/embedder.js
diff --git a/chrome/test/data/extensions/platform_apps/web_view/media_access/embedder_has_permission/embedder.js b/chrome/test/data/extensions/platform_apps/web_view/media_access/embedder_has_permission/embedder.js
new file mode 100644
index 0000000000000000000000000000000000000000..29e3e3e43501e6c156b8cef6d357da2c0f58398c
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@@ -0,0 +1,178 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var embedder = {};
+embedder.tests = {};
+embedder.baseGuestURL = '';
+embedder.guestURL = '';
+
+chrome.test.getConfig(function(config) {
+  embedder.baseGuestURL = 'http://localhost:' + config.testServer.port;
+  embedder.guestURL = embedder.baseGuestURL +
+      '/files/extensions/platform_apps/web_view/media_access' +
+      '/media_access_guest.html';
+  chrome.test.log('Guest url is: ' + embedder.guestURL);
+});
+
+embedder.tests.assertMediaEvent = function(e) {
+  chrome.test.assertEq('media', e.permission);
+  chrome.test.assertTrue(!!e.url);
+  chrome.test.assertTrue(e.url.indexOf(embedder.baseGuestURL) == 0);
+};
+
+// Loads a guest which requests media access. The embedder (platform app) has
+// acccess to media. The embedder grants access to media to the guest.
+//
+// Once the guest is allowed or denied media access, the guest notifies the
+// embedder about the fact via post message.
+// The embedder has to initiate a post message so that the guest can get a
+// reference to embedder to send the reply back.
+embedder.tests.testMediaAccessPermissionAllow = function() {
+  var container = document.getElementById('webview-tag-container-test1');
+  container.innerHTML =
+      '<webview style="width: 100px; height: 100px;"' +
+      ' src="' + embedder.guestURL + '"' +
+      '></webview >';
+  var webview = container.querySelector('webview');
+
+  var onPermissionRequest = function(e) {
+    chrome.test.log('Embedder notified on permissionRequest');
+    chrome.test.assertEq('media', e.permission);
+    chrome.test.assertTrue(!!e.url);
+    chrome.test.assertTrue(e.url.indexOf(embedder.baseGuestURL) == 0);
+    e.allow();
+  };
+  webview.addEventListener('permissionrequest', onPermissionRequest);
+
+  var onWebViewLoadStop = function(e) {
+    // Send post message to <webview> when it's ready to receive them.
+    webview.contentWindow.frames.postMessage(
+        JSON.stringify(['check-media-permission', 'test1']), '*');
+  };
+  webview.addEventListener('loadstop', onWebViewLoadStop);
+
+  var onPostMessageReceived = function(e) {
+    var data = JSON.parse(e.data);
+    if (data[1] == 'test1') {
+      var testStatus = data[0];
+      chrome.test.assertEq('access-granted', testStatus);
+      chrome.test.succeed();
+    }
+  };
+  window.addEventListener('message', onPostMessageReceived);
+};
+
+// Test that allows permission request in both listeners.
+// The second call to e.allow() would result in exception.
+embedder.tests.testMediaAccessPermissionAllowTwice = function() {
+  var container = document.getElementById('webview-tag-container-test2');
+  container.innerHTML =
+      '<webview style="width: 100px; height: 100px;"' +
+      ' src="' + embedder.guestURL + '"' +
+      '></webview >';
+  var webview = container.querySelector('webview');
+
+  var exceptionCount = 0;
+  var callCount = 0;
+  var callAllowAndCheck = function(e) {
+    try {
+      e.allow();
+      ++callCount;
+    } catch (ex) {
+      ++exceptionCount;
+    }
+    if (callCount == 1 && exceptionCount == 1) {
+      chrome.test.succeed();
+    }
+  };
+
+  var onPermissionRequestAllow1 = function(e) {
+    embedder.tests.assertMediaEvent(e);
+    callAllowAndCheck(e);
+  };
+  var onPermissionRequestAllow2 = function(e) {
+    embedder.tests.assertMediaEvent(e);
+    callAllowAndCheck(e);
+  };
+  webview.addEventListener('permissionrequest', onPermissionRequestAllow1);
+  webview.addEventListener('permissionrequest', onPermissionRequestAllow2);
+
+  var onWebViewLoadStop = function(e) {
+    // Send post message to <webview> when it's ready to receive them.
+    webview.contentWindow.frames.postMessage(
+        JSON.stringify(['check-media-permission', 'test2']), '*');
+  };
+  webview.addEventListener('loadstop', onWebViewLoadStop);
+
+  var onPostMessageReceived = function(e) {
+    var data = JSON.parse(e.data);
+    var testStatus = data[0];
+    if (data[1] == 'test2') {
+      chrome.test.assertEq('access-denied', testStatus);
+      chrome.test.succeed();
+    }
+  };
+  window.addEventListener('message', onPostMessageReceived);
+};
+
+// Loads a guest which requests media access. The embedder (platform app) has
+// acccess to media. The embedder denies access to media to the guest.
+embedder.tests.testMediaAccessPermissionDeny = function() {
+  var container = document.getElementById('webview-tag-container-test3');
+  container.innerHTML =
+      '<webview style="width: 100px; height: 100px;"' +
+      ' src="' + embedder.guestURL + '"' +
+      '></webview >';
+  var webview = container.querySelector('webview');
+
+  var onPermissionRequest = function(e) {
+    chrome.test.log('Embedder notified on permissionRequest');
+    chrome.test.assertEq('media', e.permission);
+    chrome.test.assertTrue(!!e.url);
+    chrome.test.assertTrue(e.url.indexOf(embedder.baseGuestURL) == 0);
+    try {
+      e.deny();
+    } catch (ex) {
+      chrome.test.fail('Exception not expected: ' + ex);
+    }
+  };
+  webview.addEventListener('permissionrequest', onPermissionRequest);
+
+  var onWebViewLoadStop = function(e) {
+    // Send post message to <webview> when it's ready to receive them.
+    webview.contentWindow.frames.postMessage(
+        JSON.stringify(['check-media-permission', 'test3']), '*');
+  };
+  webview.addEventListener('loadstop', onWebViewLoadStop);
+
+  var onPostMessageReceived = function(e) {
+    var data = JSON.parse(e.data);
+    if (data[1] == 'test3') {
+      var testStatus = data[0];
+      chrome.test.assertEq('access-denied', testStatus);
+      chrome.test.succeed();
+    }
+  };
+  window.addEventListener('message', onPostMessageReceived);
+};
+
+onload = function() {
+  chrome.test.runTests([
+    function testMediaAccessPermissionAllow() {
+      chrome.test.getConfig(function(config) {
+        embedder.tests.testMediaAccessPermissionAllow();
+      });
+    },
+    function testMediaAccessPermissionAllowTwice() {
+      chrome.test.getConfig(function(config) {
+        embedder.tests.testMediaAccessPermissionAllowTwice();
+      });
+    },
+    function testMediaAccessPermissionDeny() {
+      chrome.test.getConfig(function(config) {
+        embedder.tests.testMediaAccessPermissionDeny();
+      });
+    }
+  ]);
+};