Revert of Migrate accessibility from RenderView to RenderFrame.

content/browser/renderer_host/render_widget_host_view_base.cc

Index: content/browser/renderer_host/render_widget_host_view_base.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_base.cc b/content/browser/renderer_host/render_widget_host_view_base.cc
index cfc1a407daa948fe49a4085281cfbee97f749b6c..c9d3ebb8cb95f24fa3632f4407ded46e1fd6081c 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.cc
+++ b/content/browser/renderer_host/render_widget_host_view_base.cc
@@ -484,13 +484,22 @@
 }
 
 BrowserAccessibilityManager*
-RenderWidgetHostViewBase::CreateBrowserAccessibilityManager(
-    BrowserAccessibilityDelegate* delegate) {
-  NOTREACHED();
-  return NULL;
-}
-
-void RenderWidgetHostViewBase::AccessibilityShowMenu(const gfx::Point& point) {
+    RenderWidgetHostViewBase::GetBrowserAccessibilityManager() const {
+  return browser_accessibility_manager_.get();
+}
+
+void RenderWidgetHostViewBase::CreateBrowserAccessibilityManagerIfNeeded() {
+}
+
+void RenderWidgetHostViewBase::SetBrowserAccessibilityManager(
+    BrowserAccessibilityManager* manager) {
+  browser_accessibility_manager_.reset(manager);
+}
+
+void RenderWidgetHostViewBase::OnAccessibilitySetFocus(int acc_obj_id) {
+}
+
+void RenderWidgetHostViewBase::AccessibilityShowMenu(int acc_obj_id) {
 }
 
 gfx::Point RenderWidgetHostViewBase::AccessibilityOriginInScreen(