Resend unconsumed scroll update from guest back to embedder (WebView Scroll Bubble).

chrome/test/data/extensions/platform_apps/web_view/scrollable_embedder_and_guest/main.js

Index: chrome/test/data/extensions/platform_apps/web_view/scrollable_embedder_and_guest/main.js
diff --git a/chrome/test/data/extensions/platform_apps/web_view/scrollable_embedder_and_guest/main.js b/chrome/test/data/extensions/platform_apps/web_view/scrollable_embedder_and_guest/main.js
new file mode 100644
index 0000000000000000000000000000000000000000..56d43dd89db915ea9e5b29f3119f1f50ece4a7af
--- /dev/null
+++ b/chrome/test/data/extensions/platform_apps/web_view/scrollable_embedder_and_guest/main.js
@@ -0,0 +1,49 @@
+// Copyright 2015 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 LOG = function(msg) {
+    window.console.log(msg);
+};
+
+var startTest = function() {
+  var webview = document.createElement('webview');
+  var onLoadStop = function(e) {
+    webview.contentWindow.postMessage(JSON.stringify(['connect']),'*');
+  };
+
+  webview.addEventListener('loadstop', onLoadStop);
+  webview.addEventListener('consolemessage', function(e) {
+    LOG('g: ' + e.message);
+  });
+  webview.partition = 'partition1';
+  webview.style.width = '300px';
+  webview.style.height = '200px';
+  webview.style.margin = '0px';
+  webview.style.padding = '0px';
+  webview.style.position = 'absolute';
+  webview.style.left = '50px';
+  webview.style.top = '100px'
+  webview.src = 'guest.html';
+  document.querySelector('#webview-tag-container').appendChild(webview);
+};
+
+window.addEventListener('message', function(e) {
+  var data = JSON.parse(e.data);
+  LOG('data: ' + data);
+    switch (data[0]) {
+      case 'connected':
+        chrome.test.sendMessage('WebViewTest.LAUNCHED');
+        break;
+    }
+});
+
+if (chrome.test !== undefined) {
+  chrome.test.getConfig(function(config) {
+    startTest();
+  });
+} else {
+  // Allow interactive debugging.
+  // Need timeout to allow the WebView prototype to be setup.
+  window.setTimeout(startTest, 100);
+}