Handling of different types of empty alt

content/browser/accessibility/browser_accessibility.h

 // 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.
 
 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 360 matching lines @@
   bool IsWebAreaForPresentationalIframe() const;
 
   virtual bool IsClickable() const;
   bool IsControl() const;
   bool IsMenuRelated() const;
   bool IsNativeTextControl() const;
   bool IsSimpleTextControl() const;
   // Indicates if this object is at the root of a rich edit text control.
   bool IsRichTextControl() const;
 
+  // Return true if the accessible name was explicitly set to "" by the author
+  bool HasExplicitlyEmptyName() const;
+
   // If an object is focusable but has no accessible name, use this
   // to compute a name from its descendants.
   std::string ComputeAccessibleNameFromDescendants();
 
   // Creates a text position rooted at this object.
   AXPlatformPosition::AXPositionInstance CreatePositionAt(
       int offset,
       ui::AXTextAffinity affinity = ui::AX_TEXT_AFFINITY_DOWNSTREAM) const;
 
   // Gets the text offsets where new lines start.
@@ skipping 45 matching lines @@
   // bounds, but "virtual" elements in the accessibility tree that don't
   // correspond to a layed-out element sometimes don't have bounds.
   void FixEmptyBounds(gfx::RectF* bounds) const;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_