Added tab notification to accessibility_event_router_views.

chrome/browser/ui/views/tabs/tab_controller.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 CHROME_BROWSER_UI_VIEWS_TABS_TAB_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_CONTROLLER_H_
 
 #include "chrome/browser/ui/views/tabs/tab_strip_types.h"
 
 class Tab;
 
 namespace gfx {
 class Point;
 }
 namespace ui {
 class ListSelectionModel;
 class LocatedEvent;
 class MouseEvent;
 }
 namespace views {
 class View;
 }
 
 // Controller for tabs.
 class TabController {

[dmazzoni, 2014/07/16 15:08:25]

You will probably need to update tab_unittest.cc as well. Try building
"unit_tests" with ninja and then run out/Debug/unit_tests
--gtest_filter="TabTest*"

[evy, 2014/07/16 16:44:26]

Done. Is it okay if they return 0 for now?

  public:
   virtual const ui::ListSelectionModel& GetSelectionModel() = 0;
 
   // Returns true if multiple selection is supported.
   virtual bool SupportsMultipleSelection() = 0;
 
   // Selects the tab.
   virtual void SelectTab(Tab* tab) = 0;
 
   // Extends the selection from the anchor to |tab|.
@@ skipping 46 matching lines @@
                                  const ui::MouseEvent& event) = 0;
 
   // Returns true if |tab| needs to be painted. If false is returned the tab is
   // not painted. If true is returned the tab should be painted and |clip| is
   // set to the clip (if |clip| is empty means no clip).
   virtual bool ShouldPaintTab(const Tab* tab, gfx::Rect* clip) = 0;
 
   // Returns true if tabs painted in the rectangular light-bar style.
   virtual bool IsImmersiveStyle() const = 0;
 
+  // Returns the index of the specified tab in the model coordinate system, or
+  // -1 if tab is closing or not valid.
+  virtual int GetModelIndexOfTab(const Tab* tab) const = 0;
+
+  // Gets the number of Tabs in the tab strip.
+  virtual int tab_count() const = 0;

[dmazzoni, 2014/07/16 15:08:25]

As a convention, we only use the lowercase_with_underscores style for simple
accessors that aren't virtual. So change this to GetTabCount(), and change other
places in the code that call it.

[evy, 2014/07/16 16:44:26]

Done. 

+
  protected:
   virtual ~TabController() {}
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_CONTROLLER_H_