Fixed accessibility issues in bookmark bubble dialog.

ui/views/bubble/bubble_delegate.cc

Index: ui/views/bubble/bubble_delegate.cc
diff --git a/ui/views/bubble/bubble_delegate.cc b/ui/views/bubble/bubble_delegate.cc
index 987d352fd320ae43045a6d9ed262e70bbc8378f5..a680612a5e92069f0c45c7d3ce0c7aad9612bb83 100644
--- a/ui/views/bubble/bubble_delegate.cc
+++ b/ui/views/bubble/bubble_delegate.cc
@@ -4,6 +4,7 @@
 
 #include "ui/views/bubble/bubble_delegate.h"
 
+#include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/gfx/animation/slide_animation.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/rect.h"
@@ -138,6 +139,10 @@ NonClientFrameView* BubbleDelegateView::CreateNonClientFrameView(
   return frame;
 }
 
+void BubbleDelegateView::GetAccessibleState(ui::AccessibleViewState* state) {
+  state->role = ui::AccessibilityTypes::ROLE_DIALOG;
+}
+
 void BubbleDelegateView::OnWidgetDestroying(Widget* widget) {
   if (anchor_widget() == widget)
     SetAnchorView(NULL);