Set class names for ime's view classes.

ui/chromeos/ime/candidate_window_view.cc

Index: ui/chromeos/ime/candidate_window_view.cc
diff --git a/ui/chromeos/ime/candidate_window_view.cc b/ui/chromeos/ime/candidate_window_view.cc
index 823fda5d4b35a810c01b846ac2acf8bb0862f8be..7532703567784617ecd535017dcfa19b38952a1c 100644
--- a/ui/chromeos/ime/candidate_window_view.cc
+++ b/ui/chromeos/ime/candidate_window_view.cc
@@ -392,6 +392,10 @@ void CandidateWindowView::SelectCandidateAt(int index_in_page) {
   candidate_window_.set_cursor_position(cursor_absolute_index);
 }
 
+const char* CandidateWindowView::GetClassName() const {
+  return "CandidateWindowView";
+}
+
 void CandidateWindowView::ButtonPressed(views::Button* sender,
                                         const ui::Event& event) {
   for (size_t i = 0; i < candidate_views_.size(); ++i) {