Adding metadata to IMEDetailedView

This is part of the "Views Posse" effort. See this document:
https://docs.google.com/document/d/1Rst3792TjXtVA8k8GXaPD8MnuB1JAneSOpIILdA4268/edit?usp=sharing

Bug: 1159562
Test: build
Change-Id: Iaf93f3d21f0b54d5afc10d3e9506cadc0d8fcd33
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2601834Reviewed-by: Allen Bauer <kylixrd@chromium.org>
Reviewed-by: Yoshiki Iguchi <yoshiki@chromium.org>
Commit-Queue: Shengsong Tan <sstan@google.com>
Cr-Commit-Position: refs/heads/master@{#840974}

ash/system/ime/tray_ime_chromeos.cc

@@ -25,6 +25,7 @@
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/views/controls/image_view.h"
+#include "ui/views/metadata/metadata_impl_macros.h"
 
 namespace ash {
 
@@ -78,9 +79,8 @@ void IMEDetailedView::ShowSettings() {
   Shell::Get()->system_tray_model()->client()->ShowIMESettings();
 }
 
-const char* IMEDetailedView::GetClassName() const {
-  return "IMEDetailedView";
-}
+BEGIN_METADATA(IMEDetailedView, ImeListView)
+END_METADATA
 
 }  // namespace tray
 

ash/system/ime/tray_ime_chromeos.h

@@ -10,6 +10,7 @@
 #include "ash/public/cpp/ime_info.h"
 #include "ash/system/ime_menu/ime_list_view.h"
 #include "base/macros.h"
+#include "ui/views/metadata/metadata_header_macros.h"
 
 namespace views {
 class ImageView;
@@ -25,8 +26,12 @@ namespace tray {
 // enterprise-controlled icon).
 class IMEDetailedView : public ImeListView {
  public:
+  METADATA_HEADER(IMEDetailedView);
+
   IMEDetailedView(DetailedViewDelegate* delegate,
                   ImeControllerImpl* ime_controller);
+  IMEDetailedView(const IMEDetailedView&) = delete;
+  IMEDetailedView& operator=(const IMEDetailedView&) = delete;
   ~IMEDetailedView() override = default;
 
   void Update(const std::string& current_ime_id,
@@ -44,7 +49,6 @@ class IMEDetailedView : public ImeListView {
   void ResetImeListView() override;
   void CreateExtraTitleRowButtons() override;
   void ShowSettings();
-  const char* GetClassName() const override;
 
   ImeControllerImpl* const ime_controller_;
 
@@ -53,8 +57,6 @@ class IMEDetailedView : public ImeListView {
 
   // This icon says that the IMEs are managed by policy.
   views::ImageView* controlled_setting_icon_ = nullptr;
-
-  DISALLOW_COPY_AND_ASSIGN(IMEDetailedView);
 };
 }