Treat inert nodes as aria-hidden instead of aria-disabled.

Source/core/accessibility/AXObject.h

Index: Source/core/accessibility/AXObject.h
diff --git a/Source/core/accessibility/AXObject.h b/Source/core/accessibility/AXObject.h
index a1ae0c5f3f2f5e90f98c284dc9df15b92559d919..215aae37f87cea238d58440d1fcb92b9eb7d0267 100644
--- a/Source/core/accessibility/AXObject.h
+++ b/Source/core/accessibility/AXObject.h
@@ -555,6 +555,8 @@ public:
     static AccessibilityRole ariaRoleToWebCoreRole(const String&);
     static IntRect boundingBoxForQuads(RenderObject*, const Vector<FloatQuad>&);
 
+    bool ariaIsHidden() const;

[dmazzoni, 2013/10/30 23:32:22]

With the name ariaIsHidden, this should be grouped under "ARIA attributes",
above.

But I'm thinking that it's misleading to call it ariaIsHidden.

The Blink style is to be clear, even if it's slightly more verbose. How about
isInertOrAriaHidden, and group it under the "Whether objects are ignored"
section.

[falken, 2013/10/31 02:27:40]

Done.

+
 protected:
     AXID m_id;
     AccessibilityChildrenVector m_children;
@@ -570,7 +572,6 @@ protected:
     virtual void scrollTo(const IntPoint&) const { }
 
     AccessibilityRole buttonRoleType() const;
-    bool ariaIsHidden() const;
 
     bool allowsTextRanges() const { return isTextControl(); }
     unsigned getLengthForTextRange() const { return text().length(); }