Implement automatic load of composed/embedded automation trees

ui/views/controls/webview/webview.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 "ui/views/controls/webview/webview.h"
 
 #include "content/public/browser/browser_accessibility_state.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/render_view_host.h"
@@ skipping 192 matching lines @@
   if (web_contents())
     web_contents()->Focus();
 }
 
 void WebView::AboutToRequestFocusFromTabTraversal(bool reverse) {
   if (web_contents())
     web_contents()->FocusThroughTabTraversal(reverse);
 }
 
 void WebView::GetAccessibleState(ui::AXViewState* state) {
-  state->role = ui::AX_ROLE_GROUP;
+  state->role = ui::AX_ROLE_WEB_VIEW;
 }
 
 gfx::NativeViewAccessible WebView::GetNativeViewAccessible() {
   if (web_contents()) {
     content::RenderWidgetHostView* host_view =
         web_contents()->GetRenderWidgetHostView();
     if (host_view)
       return host_view->GetNativeViewAccessible();
   }
   return View::GetNativeViewAccessible();
@@ skipping 142 matching lines @@
   if (!contents) {
     content::WebContents::CreateParams create_params(
         browser_context, NULL);
     return content::WebContents::Create(create_params);
   }
 
   return contents;
 }
 
 }  // namespace views