Add tab status to accessibility labels

chrome/browser/ui/views/frame/browser_view.h

Index: chrome/browser/ui/views/frame/browser_view.h
diff --git a/chrome/browser/ui/views/frame/browser_view.h b/chrome/browser/ui/views/frame/browser_view.h
index d9e2f42902a8a5f813bb4731ff1c0489a30aaf29..aec944bdc40af2b8e1960b04c34896b641ad65be 100644
--- a/chrome/browser/ui/views/frame/browser_view.h
+++ b/chrome/browser/ui/views/frame/browser_view.h
@@ -32,6 +32,7 @@
 #include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
 #include "chrome/browser/ui/views/frame/web_contents_close_handler.h"
 #include "chrome/browser/ui/views/load_complete_listener.h"
+#include "chrome/browser/ui/views/tabs/tab_renderer_data.h"
 #include "chrome/common/features.h"
 #include "components/omnibox/browser/omnibox_popup_model_observer.h"
 #include "ui/base/accelerators/accelerator.h"
@@ -471,6 +472,11 @@ class BrowserView : public BrowserWindow,
   views::WebView* GetContentsWebViewForTest() { return contents_web_view_; }
   views::WebView* GetDevToolsWebViewForTest() { return devtools_web_view_; }
 
+  // Creates an accessible tab label for screen readers that includes the tab
+  // status. This takes the form of "Page title - Tab state".
+  base::string16 GetAccessibleTabLabel(bool include_app_name,
+                                       TabRendererData data) const;
+
  private:
   // Do not friend BrowserViewLayout. Use the BrowserViewLayoutDelegate
   // interface to keep these two classes decoupled and testable.