Added tab notification to accessibility_event_router_views.

chrome/browser/ui/views/tabs/tab_controller.h

Index: chrome/browser/ui/views/tabs/tab_controller.h
diff --git a/chrome/browser/ui/views/tabs/tab_controller.h b/chrome/browser/ui/views/tabs/tab_controller.h
index d20a178673dd12214ce7b9997e494d5d2129f23d..c69f1e3fc3561ee809aa95c705eb5f1ef06fcc10 100644
--- a/chrome/browser/ui/views/tabs/tab_controller.h
+++ b/chrome/browser/ui/views/tabs/tab_controller.h
@@ -89,6 +89,13 @@ class TabController {
   // 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() {}
 };