Omnibox - ClipboardRecentContent - Make Proper Singleton

components/open_from_clipboard/clipboard_recent_content.h

Index: components/open_from_clipboard/clipboard_recent_content.h
diff --git a/components/open_from_clipboard/clipboard_recent_content.h b/components/open_from_clipboard/clipboard_recent_content.h
index e7d55e92e1d3811e1f45c38d8e4a299c68fd8301..93e9a50ff08e4c644d3ec075160f496efe1bf988 100644
--- a/components/open_from_clipboard/clipboard_recent_content.h
+++ b/components/open_from_clipboard/clipboard_recent_content.h
@@ -5,6 +5,7 @@
 #ifndef COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_
 #define COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
@@ -25,7 +26,7 @@ class ClipboardRecentContent {
   static ClipboardRecentContent* GetInstance();
 
   // Sets the global instance of ClipboardRecentContent singleton.
-  static void SetInstance(ClipboardRecentContent* instance);
+  static void SetInstance(std::unique_ptr<ClipboardRecentContent> new_instance);
 
   // Returns true if the clipboard contains a recent URL that is appropriate to
   // be suggested and has not been supressed, and copies it in |url|.