Move some accessibility methods, enums and interfaces into the content/public API.

content/browser/accessibility/dump_accessibility_tree_helper.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/browser/accessibility/dump_accessibility_tree_helper.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
+#include "content/browser/accessibility/browser_accessibility_manager.h"
+#include "content/port/browser/render_widget_host_view_port.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/web_contents.h"
 
 namespace content {
 namespace {
 const int kIndentSpaces = 4;
 const char* kSkipString = "@NO_DUMP";
 }
 
-DumpAccessibilityTreeHelper::DumpAccessibilityTreeHelper() {
+DumpAccessibilityTreeHelper::DumpAccessibilityTreeHelper(
+    BrowserAccessibility* node)
+    : node_(node) {
   Initialize();
 }
 
+// static
+AccessibilityTreeFormatter* AccessibilityTreeFormatter::From(
+    RenderViewHost* rvh) {
+  RenderWidgetHostViewPort* host_view = static_cast<RenderWidgetHostViewPort*>(
+      WebContents::FromRenderViewHost(rvh)->GetRenderWidgetHostView());
+
+  content::BrowserAccessibilityManager* manager =
+      host_view->GetBrowserAccessibilityManager();
+  if (!manager)
+    return NULL;
+
+  content::BrowserAccessibility* root = manager->GetRoot();
+  return new DumpAccessibilityTreeHelper(root);
+}
+
+
 DumpAccessibilityTreeHelper::~DumpAccessibilityTreeHelper() {
 }
 
-void DumpAccessibilityTreeHelper::DumpAccessibilityTree(
-    BrowserAccessibility* node, string16* contents) {
-  RecursiveDumpAccessibilityTree(node, contents, 0);
+void DumpAccessibilityTreeHelper::FormatAccessibilityTree(string16* contents) {
+  RecursiveDumpAccessibilityTree(node_, contents, 0);
 }
 
 void DumpAccessibilityTreeHelper::RecursiveDumpAccessibilityTree(
     BrowserAccessibility* node, string16* contents, int indent) {
   scoped_array<char> prefix(new char[indent + 1]);
   for (int i = 0; i < indent; ++i)
     prefix[i] = ' ';
   prefix[indent] = '\0';
 
   string16 line = ToString(node, prefix.get());
   if (line.find(ASCIIToUTF16(kSkipString)) != string16::npos)
     return;
 
   *contents += line;
   for (size_t i = 0; i < node->children().size(); ++i) {
     RecursiveDumpAccessibilityTree(node->children()[i], contents,
                                    indent + kIndentSpaces);
   }
 }
 
 void DumpAccessibilityTreeHelper::SetFilters(
     const std::vector<Filter>& filters) {
   filters_ = filters;
 }
 
 bool DumpAccessibilityTreeHelper::MatchesFilters(
-    const string16& text, bool default_result) {
+    const string16& text, bool default_result) const {
   std::vector<Filter>::const_iterator iter = filters_.begin();
   bool allow = default_result;
   for (iter = filters_.begin(); iter != filters_.end(); ++iter) {
     if (MatchPattern(text, iter->match_str)) {
       if (iter->type == Filter::ALLOW_EMPTY)
         allow = true;
       else if (iter->type == Filter::ALLOW)
         allow = (!MatchPattern(text, UTF8ToUTF16("*=''")));
       else
         allow = false;
@@ skipping 15 matching lines @@
   if (!line_.empty())
     line_ += ASCIIToUTF16(" ");
   line_ += attr;
 }
 
 string16 DumpAccessibilityTreeHelper::FinishLine() {
   return line_;
 }
 
 }  // namespace content