Move html_viewer from mojo/services to components.

mojo/services/html_viewer/ax_provider_impl.h

-// 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.
-
-#ifndef MOJO_SERVICES_HTML_VIEWER_AX_PROVIDER_IMPL_H_
-#define MOJO_SERVICES_HTML_VIEWER_AX_PROVIDER_IMPL_H_
-
-#include "third_party/mojo/src/mojo/public/cpp/bindings/interface_impl.h"
-#include "third_party/mojo_services/src/accessibility/public/interfaces/accessibility.mojom.h"
-
-namespace blink {
-class WebAXObject;
-class WebView;
-}  // namespace blink
-
-namespace html_viewer {
-
-// Caller must ensure that |web_view| outlives AxProviderImpl.
-class AxProviderImpl : public mojo::InterfaceImpl<mojo::AxProvider> {
- public:
-  explicit AxProviderImpl(blink::WebView* web_view);
-  void GetTree(const mojo::Callback<void(mojo::Array<mojo::AxNodePtr> nodes)>&
-                   callback) override;
-
- private:
-  int Populate(const blink::WebAXObject& ax_object,
-               int parent_id,
-               int next_sibling_id,
-               mojo::Array<mojo::AxNodePtr>* result);
-  mojo::AxNodePtr ConvertAxNode(const blink::WebAXObject& ax_object,
-                                int parent_id,
-                                int next_sibling_id);
-
-  blink::WebView* web_view_;
-};
-
-}  // namespace html_viewer
-
-#endif  // MOJO_SERVICES_HTML_VIEWER_AX_PROVIDER_IMPL_H_