Initial support for native accessibility in ARC

components/exo/surface.cc

 // Copyright 2015 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 "components/exo/surface.h"
 
 #include <utility>
 
 #include "base/callback_helpers.h"
 #include "base/logging.h"
@@ skipping 644 matching lines @@
 
   // VSync parameters updates are generated at the start of a new swap. Move
   // the swapping presentation callbacks to swapped callbacks so they fire
   // at the next VSync parameters update as that will contain the presentation
   // time for the previous frame.
   swapped_presentation_callbacks_.splice(swapped_presentation_callbacks_.end(),
                                          swapping_presentation_callbacks_);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// Accessibility
+//
+void Surface::UpdateAXTreeID(int32_t id) {
+  LOG(ERROR) << "trying to update surface!" << id;
+  for (SurfaceObserver& observer : observers_) {
+    LOG(ERROR) << "update surface!" << id;
+    observer.OnSurfaceAXTreeChanged(id);
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // Buffer, private:
 
 Surface::State::State() : input_region(SkIRect::MakeLargest()) {}
 
 Surface::State::~State() = default;
 
 bool Surface::State::operator==(const State& other) {
   return (other.crop == crop && alpha == other.alpha &&
           other.blend_mode == blend_mode && other.viewport == viewport &&
           other.opaque_region == opaque_region &&
@@ skipping 168 matching lines @@
 
 int64_t Surface::GetPropertyInternal(const void* key,
                                      int64_t default_value) const {
   std::map<const void*, Value>::const_iterator iter = prop_map_.find(key);
   if (iter == prop_map_.end())
     return default_value;
   return iter->second.value;
 }
 
 }  // namespace exo