Mac: Fix tab view accessibility.

chrome/browser/ui/cocoa/hover_close_button.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/hover_close_button.h"
 
 #include "chrome/grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMKeyValueAnimation.h"
 #include "ui/base/cocoa/animation_utils.h"
@@ skipping 166 matching lines @@
       // which will clean up the animation.
       [fadeOutAnimation_ stopAnimation];
     }
   }
 }
 
 - (void)commonInit {
   // Set accessibility description.
   NSCell* cell = [self cell];
   [cell accessibilitySetOverrideValue:gDescription
-                         forAttribute:NSAccessibilityDescriptionAttribute];
+                         forAttribute:NSAccessibilityTitleAttribute];
 
   // Add a tooltip. Using 'owner:self' means that
   // -view:stringForToolTip:point:userData: will be called to provide the
   // tooltip contents immediately before showing it.
   [self addToolTipRect:[self bounds] owner:self userData:NULL];
 
   // Initialize previousState.
   previousState_ = kHoverStateNone;
 }
 
@@ skipping 30 matching lines @@
       break;
     case kHoverStateMouseDown:
       imageID = IDR_CLOSE_DIALOG_P;
       break;
   }
   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
   return bundle.GetNativeImageNamed(imageID).ToNSImage();
 }
 
 @end