Revert 284065 "Revert of Revert of Migrate accessibility from Re..."

trunk/src/content/browser/accessibility/dump_accessibility_tree_browsertest.cc

Index: trunk/src/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
===================================================================
--- trunk/src/content/browser/accessibility/dump_accessibility_tree_browsertest.cc	(revision 284469)
+++ trunk/src/content/browser/accessibility/dump_accessibility_tree_browsertest.cc	(working copy)
@@ -19,7 +19,6 @@
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
-#include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/common/content_switches.h"
@@ -182,10 +181,10 @@
   NavigateToURL(shell(), url);
   waiter.WaitForNotification();
 
-  WebContentsImpl* web_contents = static_cast<WebContentsImpl*>(
-      shell()->web_contents());
+  RenderWidgetHostViewBase* host_view = static_cast<RenderWidgetHostViewBase*>(
+      shell()->web_contents()->GetRenderWidgetHostView());
   AccessibilityTreeFormatter formatter(
-      web_contents->GetRootBrowserAccessibilityManager()->GetRoot());
+      host_view->GetBrowserAccessibilityManager()->GetRoot());
 
   // Parse filters in the test file.
   std::vector<Filter> filters;