Set class names for ime's view classes.

ui/chromeos/ime/candidate_window_view.h

Index: ui/chromeos/ime/candidate_window_view.h
diff --git a/ui/chromeos/ime/candidate_window_view.h b/ui/chromeos/ime/candidate_window_view.h
index 4f8efb80206def1e058bf780cf298082bf365267..e4846fe47767998e850b5b52fd0d5ca9727b515a 100644
--- a/ui/chromeos/ime/candidate_window_view.h
+++ b/ui/chromeos/ime/candidate_window_view.h
@@ -18,7 +18,7 @@ class InformationTextArea;
 
 // CandidateWindowView is the main container of the candidate window UI.
 class UI_CHROMEOS_EXPORT CandidateWindowView : public views::BubbleDelegateView,
-                                       public views::ButtonListener {
+                                               public views::ButtonListener {
  public:
   // The object can be monitored by the observer.
   class Observer {
@@ -73,6 +73,9 @@ class UI_CHROMEOS_EXPORT CandidateWindowView : public views::BubbleDelegateView,
  private:
   friend class CandidateWindowViewTest;
 
+  // views::BubbleDelegateView:
+  const char* GetClassName() const override;
+
   // Overridden from views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;