Implement accessible states and notifications for the tab strip.

chrome/browser/ui/views/tabs/tab.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 "chrome/browser/ui/views/tabs/tab.h"
 
 #include <limits>
 
 #include "base/command_line.h"
 #include "base/debug/alias.h"
@@ skipping 958 matching lines @@
 
     default:
       break;
   }
   event->SetHandled();
 }
 
 void Tab::GetAccessibleState(ui::AXViewState* state) {
   state->role = ui::AX_ROLE_TAB;
   state->name = data_.title;
+  state->AddStateFlag(ui::AX_STATE_MULTISELECTABLE);
+  state->AddStateFlag(ui::AX_STATE_SELECTABLE);
+  if (IsSelected())
+    state->AddStateFlag(ui::AX_STATE_SELECTED);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Tab, private
 
 void Tab::MaybeAdjustLeftForMiniTab(gfx::Rect* bounds) const {
   if (!data().mini || width() >= kMiniTabRendererAsNormalTabWidth)
     return;
   const int mini_delta = kMiniTabRendererAsNormalTabWidth - GetMiniWidth();
   const int ideal_delta = width() - GetMiniWidth();
@@ skipping 626 matching lines @@
                          const gfx::ImageSkia& image) {
   DCHECK_NE(scale_factor, ui::SCALE_FACTOR_NONE);
   ImageCacheEntry entry;
   entry.resource_id = resource_id;
   entry.scale_factor = scale_factor;
   entry.image = image;
   image_cache_->push_front(entry);
   if (image_cache_->size() > kMaxImageCacheSize)
     image_cache_->pop_back();
 }