Keep track of fixed positioning in accessibility tree.

content/browser/accessibility/browser_accessibility_manager.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/browser_accessibility_manager.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/logging.h"
@@ skipping 343 matching lines @@
   TRACE_EVENT0("accessibility",
                "BrowserAccessibilityManager::OnAccessibilityEvents");
 
   // Update the cached device scale factor.
   if (delegate_ && !use_custom_device_scale_factor_for_testing_)
     device_scale_factor_ = delegate_->AccessibilityGetDeviceScaleFactor();
 
   // Process all changes to the accessibility tree first.
   for (uint32_t index = 0; index < details.size(); ++index) {
     const AXEventNotificationDetails& detail = details[index];
+    LOG(ERROR) << detail.update.ToString();
     if (!tree_->Unserialize(detail.update)) {
       if (delegate_) {
         LOG(ERROR) << tree_->error();
         delegate_->AccessibilityFatalError();
       } else {
         CHECK(false) << tree_->error();
       }
       return;
     }
   }
@@ skipping 85 matching lines @@
       NotifyAccessibilityEvent(
           BrowserAccessibilityEvent::FromBlink,
           event_type,
           event_target);
     }
   }
 }
 
 void BrowserAccessibilityManager::OnLocationChanges(
     const std::vector<AccessibilityHostMsg_LocationChangeParams>& params) {
+  LOG(ERROR) << "OnLocationChanges";
   for (size_t i = 0; i < params.size(); ++i) {
     BrowserAccessibility* obj = GetFromID(params[i].id);
     if (!obj)
       continue;
     ui::AXNode* node = obj->node();
     node->SetLocation(params[i].new_location.offset_container_id,
                       params[i].new_location.bounds,
-                      params[i].new_location.transform.get());
+                      params[i].new_location.transform.get(),
+                      params[i].new_location.is_fixed_positioned);
+    LOG(ERROR) << "Location update: " << node->data().ToString();
   }
   SendLocationChangeEvents(params);
 }
 
 void BrowserAccessibilityManager::SendLocationChangeEvents(
     const std::vector<AccessibilityHostMsg_LocationChangeParams>& params) {
   for (size_t i = 0; i < params.size(); ++i) {
     BrowserAccessibility* obj = GetFromID(params[i].id);
     if (obj)
       obj->OnLocationChanged();
@@ skipping 825 matching lines @@
       hit_test_result = parent;
     parent = parent->PlatformGetParent();
   }
 
   last_hover_ax_tree_id_ = hit_test_result->manager()->ax_tree_id();
   last_hover_node_id_ = hit_test_result->GetId();
   last_hover_bounds_ = hit_test_result->GetScreenBoundsRect();
 }
 
 }  // namespace content