Add 4 ARIA 1.1 attributes using new sparse attribute interface.

content/renderer/accessibility/blink_ax_tree_source.cc

 // 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.
 
 #include "content/renderer/accessibility/blink_ax_tree_source.h"
 
 #include <stddef.h>
 
 #include <set>
 
@@ skipping 60 matching lines @@
   AXContentNodeDataSparseAttributeAdapter(AXContentNodeData* dst) : dst_(dst) {
     DCHECK(dst_);
   }
   ~AXContentNodeDataSparseAttributeAdapter() override {}
 
  private:
   AXContentNodeData* dst_;
 
   void addBoolAttribute(blink::WebAXBoolAttribute attribute,
                         bool value) override {
-    NOTREACHED();
+    switch (attribute) {
+      default:
+        NOTREACHED();
+    }
   }
 
   void addStringAttribute(blink::WebAXStringAttribute attribute,
                           const blink::WebString& value) override {
-    NOTREACHED();
+    switch (attribute) {
+      case blink::WebAXStringAttribute::AriaKeyShortcuts:
+        // TODO(dmazzoni): implement aria-keyshortcuts. http://crbug.com/644766
+        break;
+      case blink::WebAXStringAttribute::AriaRoleDescription:
+        // TODO(dmazzoni): implement aria-roledescription.
+        // http://crbug.com/644766
+        break;
+      default:
+        NOTREACHED();
+    }
   }
 
   void addObjectAttribute(blink::WebAXObjectAttribute attribute,
                           const blink::WebAXObject& value) override {
     switch (attribute) {
       case blink::WebAXObjectAttribute::AriaActiveDescendant:
         dst_->AddIntAttribute(ui::AX_ATTR_ACTIVEDESCENDANT_ID, value.axID());
         break;
+      case blink::WebAXObjectAttribute::AriaErrorMessage:
+        // TODO

[aboxhall, 2017/01/27 01:41:21]

TODO needs completing (still TODO?)

[dmazzoni, 2017/01/31 00:31:54]

Coming in the immediately-following change:

https://codereview.chromium.org/2587343004/

+        break;
       default:
         NOTREACHED();
     }
   }
 
   void addObjectVectorAttribute(
       blink::WebAXObjectVectorAttribute attribute,
       const blink::WebVector<WebAXObject>& value) override {
     switch (attribute) {
       case blink::WebAXObjectVectorAttribute::AriaControls:
         AddIntListAttributeFromWebObjects(ui::AX_ATTR_CONTROLS_IDS, value,
                                           dst_);
         break;
+      case blink::WebAXObjectVectorAttribute::AriaDetails:
+        // TODO
+        break;
       case blink::WebAXObjectVectorAttribute::AriaFlowTo:
         AddIntListAttributeFromWebObjects(ui::AX_ATTR_FLOWTO_IDS, value, dst_);
         break;
       default:
         NOTREACHED();
     }
   }
 };
 
 WebAXObject ParentObjectUnignored(WebAXObject child) {
@@ skipping 722 matching lines @@
     return WebAXObject();
 
   WebDocument document = render_frame_->GetWebFrame()->document();
   if (!document.isNull())
     return document.accessibilityObject();
 
   return WebAXObject();
 }
 
 }  // namespace content