Fix touch accessibility events in WebViews and iframes

content/browser/accessibility/accessibility_test_utils.cc

+// Copyright 2016 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.
+
+#include "content/browser/accessibility/accessibility_test_utils.h"
+
+#include "content/browser/accessibility/browser_accessibility.h"
+#include "content/browser/accessibility/browser_accessibility_manager.h"
+#include "content/browser/frame_host/frame_tree.h"
+#include "content/browser/frame_host/render_frame_host_impl.h"
+#include "content/browser/web_contents/web_contents_impl.h"
+#include "content/test/accessibility_browser_test_utils.h"
+
+namespace content {
+
+bool AccessibilityTreeContainsNodeWithName(BrowserAccessibility* node,
+                                           const std::string& name) {
+  if (node->GetStringAttribute(ui::AX_ATTR_NAME) == name)
+    return true;
+  for (unsigned i = 0; i < node->PlatformChildCount(); i++) {
+    if (AccessibilityTreeContainsNodeWithName(node->PlatformGetChild(i), name))
+      return true;
+  }
+  return false;
+}
+
+void WaitForAccessibilityTreeToContainNodeWithName(WebContents* web_contents,
+                                                   const std::string& name) {
+  WebContentsImpl* web_contents_impl = static_cast<WebContentsImpl*>(
+      web_contents);
+  RenderFrameHostImpl* main_frame = static_cast<RenderFrameHostImpl*>(
+      web_contents_impl->GetMainFrame());
+  BrowserAccessibilityManager* main_frame_manager =
+      main_frame->browser_accessibility_manager();
+  FrameTree* frame_tree = web_contents_impl->GetFrameTree();
+  while (!AccessibilityTreeContainsNodeWithName(
+             main_frame_manager->GetRoot(), name)) {
+    AccessibilityNotificationWaiter accessibility_waiter(main_frame,
+                                                         ui::AX_EVENT_NONE);
+    for (FrameTreeNode* node : frame_tree->Nodes())
+      accessibility_waiter.ListenToAdditionalFrame(
+          node->current_frame_host());
+
+    accessibility_waiter.WaitForNotification();
+  }
+}
+
+}  // namespace