Enable PDF accessibility when RenderFrame's accessibility mode changes.

content/public/test/browser_test_utils.cc

 // 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.
 
 #include "content/public/test/browser_test_utils.h"
 
 #include <stddef.h>
 #include <tuple>
 #include <utility>
 
@@ skipping 16 matching lines @@
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/browser/web_contents/web_contents_view.h"
 #include "content/common/input/synthetic_web_input_event_builders.h"
 #include "content/common/input_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/browser_context.h"
+#include "content/public/browser/browser_plugin_guest_manager.h"
 #include "content/public/browser/histogram_fetcher.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/test_navigation_observer.h"
@@ skipping 918 matching lines @@
                                            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;
 }
 
+bool ListenToGuestWebContents(
+    AccessibilityNotificationWaiter* accessibility_waiter,
+    WebContents* web_contents) {
+  accessibility_waiter->ListenToAdditionalFrame(
+      static_cast<RenderFrameHostImpl*>(web_contents->GetMainFrame()));
+  return true;
+}
+
 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(
+  while (!main_frame_manager || !AccessibilityTreeContainsNodeWithName(
              main_frame_manager->GetRoot(), name)) {
     AccessibilityNotificationWaiter accessibility_waiter(main_frame,
                                                          ui::AX_EVENT_NONE);
-    for (FrameTreeNode* node : frame_tree->Nodes())
+    for (FrameTreeNode* node : frame_tree->Nodes()) {
       accessibility_waiter.ListenToAdditionalFrame(
           node->current_frame_host());
+    }
+
+    content::BrowserPluginGuestManager* guest_manager =
+        web_contents_impl->GetBrowserContext()->GetGuestManager();
+    if (guest_manager) {
+      guest_manager->ForEachGuest(web_contents_impl,
+                                  base::Bind(&ListenToGuestWebContents,
+                                             &accessibility_waiter));
+    }
 
     accessibility_waiter.WaitForNotification();
+    main_frame_manager = main_frame->browser_accessibility_manager();
   }
 }
 
 ui::AXTreeUpdate GetAccessibilityTreeSnapshot(WebContents* web_contents) {
   WebContentsImpl* web_contents_impl =
       static_cast<WebContentsImpl*>(web_contents);
   BrowserAccessibilityManager* manager =
       web_contents_impl->GetRootBrowserAccessibilityManager();
   if (!manager)
     return ui::AXTreeUpdate();
@@ skipping 314 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (ack_result_ != INPUT_EVENT_ACK_STATE_UNKNOWN)
     return ack_result_;
   base::RunLoop run_loop;
   base::AutoReset<base::Closure> reset_quit(&quit_, run_loop.QuitClosure());
   run_loop.Run();
   return ack_result_;
 }
 
 }  // namespace content