Revert 152135 - Fix accessability for web notification tray.

ash/system/tray/system_tray.cc

Index: ash/system/tray/system_tray.cc
===================================================================
--- ash/system/tray/system_tray.cc	(revision 152315)
+++ ash/system/tray/system_tray.cc	(working copy)
@@ -35,6 +35,7 @@
 #include "base/utf_string_conversions.h"
 #include "grit/ash_strings.h"
 #include "ui/aura/root_window.h"
+#include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/base/events.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/compositor/layer.h"
@@ -422,10 +423,6 @@
     bubble_->bubble_view()->UpdateBubble();
 }
 
-string16 SystemTray::GetAccessibleName() {
-  return l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_ACCESSIBLE_NAME);
-}
-
 bool SystemTray::PerformAction(const ui::Event& event) {
   // If we're already showing the default view, hide it; otherwise, show it
   // (and hide any popup that's currently shown).
@@ -448,4 +445,10 @@
   return true;
 }
 
+void SystemTray::GetAccessibleState(ui::AccessibleViewState* state) {
+  state->role = ui::AccessibilityTypes::ROLE_PUSHBUTTON;
+  state->name = l10n_util::GetStringUTF16(
+      IDS_ASH_STATUS_TRAY_ACCESSIBLE_NAME);
+}
+
 }  // namespace ash