Migrate accessibility from RenderView to RenderFrame.

content/browser/accessibility/#browser_accessibility_manager.cc#

Index: content/browser/accessibility/#browser_accessibility_manager.cc#
diff --git a/content/browser/accessibility/browser_accessibility_manager.cc b/content/browser/accessibility/#browser_accessibility_manager.cc#
similarity index 88%
copy from content/browser/accessibility/browser_accessibility_manager.cc
copy to content/browser/accessibility/#browser_accessibility_manager.cc#
index 6bdce2d907a503186a04788d2ba7731723866923..27572fe3c513221503d721dcbd6c2656385561c5 100644
--- a/content/browser/accessibility/browser_accessibility_manager.cc
+++ b/content/browser/accessibility/#browser_accessibility_manager.cc#
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2014 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.
 
@@ -51,8 +51,9 @@ BrowserAccessibility* BrowserAccessibilityFactory::Create() {
 #if !defined(OS_MACOSX) && \
     !defined(OS_WIN) && \
     !defined(OS_ANDROID) \
-// We have subclassess of BrowserAccessibilityManager on Mac, and Win. For any
-// other platform, instantiate the base class.
+// We have subclassess of BrowserAccessibilityManager on Mac, Win, and Android.
+// These are the default implementations of these functions 
+
 // static
 BrowserAccessibilityManager* BrowserAccessibilityManager::Create(
     const ui::AXTreeUpdate& initial_tree,
@@ -60,6 +61,16 @@ BrowserAccessibilityManager* BrowserAccessibilityManager::Create(
     BrowserAccessibilityFactory* factory) {
   return new BrowserAccessibilityManager(initial_tree, delegate, factory);
 }
+
+// static
+ui::AXTreeUpdate BrowserAccessibilityManager::GetEmptyDocument() {
+  ui::AXNodeData empty_document;
+  empty_document.id = 0;
+  empty_document.role = ui::AX_ROLE_ROOT_WEB_AREA;
+  ui::AXTreeUpdate update;
+  update.nodes.push_back(empty_document);
+  return update;
+}
 #endif
 
 BrowserAccessibilityManager::BrowserAccessibilityManager(
@@ -105,16 +116,6 @@ void BrowserAccessibilityManager::Initialize(
     SetFocus(tree_->GetRoot(), false);
 }
 
-// static
-ui::AXTreeUpdate BrowserAccessibilityManager::GetEmptyDocument() {
-  ui::AXNodeData empty_document;
-  empty_document.id = 0;
-  empty_document.role = ui::AX_ROLE_ROOT_WEB_AREA;
-  ui::AXTreeUpdate update;
-  update.nodes.push_back(empty_document);
-  return update;
-}
-
 BrowserAccessibility* BrowserAccessibilityManager::GetRoot() {
   return GetFromAXNode(tree_->GetRoot());
 }
@@ -142,6 +143,40 @@ void BrowserAccessibilityManager::OnWindowBlurred() {
     NotifyAccessibilityEvent(ui::AX_EVENT_BLUR, GetFromAXNode(focus_));
 }
 
+void BrowserAccessibilityManager::OnNavigation(bool is_reload) {
+  // Exit if we don't even have the first document loaded yet.
+  if (GetRoot()->GetId() == 0)
+    return;
+
+  LOG(ERROR) << "AX: BrowserAccessibilityManager::OnNavigation " << is_reload;
+  // Create an update that replaces the current tree with an empty document
+  // (which should be in the "busy" state by default) and apply it.
+  ui::AXTreeUpdate update = GetEmptyDocument();
+
+  LOG(ERROR) << "AX: OnNavigation empty doc update state: "
+	     << update.nodes[0].state;
+
+  update.nodes[0].id = GetRoot()->GetId();
+
+  LOG(ERROR) << "AX: State before unserializing the empty doc: "
+	     << GetRoot()->GetState();
+  LOG(ERROR) << "AX: Root id before unserializing the empty doc: "
+	     << GetRoot()->GetId();
+  LOG(ERROR) << "AX: Root children before: "
+	     << GetRoot()->PlatformChildCount();
+
+  LOG(ERROR) << "AX: State of first node in update: "
+	     << update.nodes[0].state;
+
+  CHECK(tree_->Unserialize(update));
+  LOG(ERROR) << "AX: State after unserializing the empty doc: "
+	     << GetRoot()->GetState();
+  LOG(ERROR) << "AX: Root id after unserializing the empty doc: "
+	     << GetRoot()->GetId();
+  LOG(ERROR) << "AX: Root children after: "
+	     << GetRoot()->PlatformChildCount();
+}
+
 void BrowserAccessibilityManager::GotMouseDown() {
   osk_state_ = OSK_ALLOWED_WITHIN_FOCUSED_OBJECT;
   NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, GetFromAXNode(focus_));