Refactor Clipboard Last Modified Time Storage

ui/base/test/test_clipboard.h

Index: ui/base/test/test_clipboard.h
diff --git a/ui/base/test/test_clipboard.h b/ui/base/test/test_clipboard.h
index 7bf88a24b65b44f5b2a6dfd653f55c00470d7197..a574adbaf1bf9db2db5212e670a9af8e49a85cf5 100644
--- a/ui/base/test/test_clipboard.h
+++ b/ui/base/test/test_clipboard.h
@@ -26,8 +26,8 @@ class TestClipboard : public Clipboard {
   // Clipboard::DestroyClipboardForCurrentThread() on the same thread.
   static Clipboard* CreateForCurrentThread();
 
-  // Sets the time to be returned by GetClipboardLastModifiedTime();
-  void SetClipboardLastModifiedTime(const base::Time& time);
+  // Sets the time to be returned by GetLastModifiedTime();
+  void SetLastModifiedTime(const base::Time& time);
 
   // Clipboard overrides.
   void OnPreShutdown() override;
@@ -52,7 +52,8 @@ class TestClipboard : public Clipboard {
                       base::string16* result) const override;
   void ReadBookmark(base::string16* title, std::string* url) const override;
   void ReadData(const FormatType& format, std::string* result) const override;
-  base::Time GetClipboardLastModifiedTime() const override;
+  base::Time GetLastModifiedTime() const override;
+  void ClearLastModifiedTime() override;
   void WriteObjects(ClipboardType type, const ObjectMap& objects) override;
   void WriteText(const char* text_data, size_t text_len) override;
   void WriteHTML(const char* markup_data,