Clear the clipboard closing Incognito window

content/public/browser/clipboard_write_callback_params.h

Index: content/public/browser/clipboard_write_callback_params.h
diff --git a/content/public/browser/clipboard_write_callback_params.h b/content/public/browser/clipboard_write_callback_params.h
new file mode 100644
index 0000000000000000000000000000000000000000..ee687d84cadeda2c110c214b4ae2270ac17f6c88
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+++ b/content/public/browser/clipboard_write_callback_params.h
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+#ifndef CONTENT_PUBLIC_BROWSER_CLIPBOARD_WRITE_CALLBACK_PARAMS_H_
+#define CONTENT_PUBLIC_BROWSER_CLIPBOARD_WRITE_CALLBACK_PARAMS_H_
+
+#include "ui/base/clipboard/clipboard.h"
+
+namespace content {
+
+class BrowserContext;
+
+// ClipboardWriteCallbackParams carries data through ChromeContentBrowserClient
+// thus allowing "chrome" layer to modify Clipboard::ObjectMap before writing.
+struct ClipboardWriteCallbackParams {
+  ClipboardWriteCallbackParams(BrowserContext* context,
+                               ui::Clipboard::ObjectMap& object_map)
+      : browser_context(context),
+        objects(object_map) {
+  }
+
+  BrowserContext* browser_context;
+  ui::Clipboard::ObjectMap& objects;
+};
+
+}  // namespace content
+#endif  // CONTENT_PUBLIC_BROWSER_CLIPBOARD_WRITE_CALLBACK_PARAMS_H_