Clear the clipboard closing Incognito window

content/browser/renderer_host/clipboard_message_filter.h

Index: content/browser/renderer_host/clipboard_message_filter.h
diff --git a/content/browser/renderer_host/clipboard_message_filter.h b/content/browser/renderer_host/clipboard_message_filter.h
index 73cfdd0fde3de4a9953d7fbaaf27a88ea55bbbaf..96c56206a039477b2f3e6199c5c02b586a9aa761 100644
--- a/content/browser/renderer_host/clipboard_message_filter.h
+++ b/content/browser/renderer_host/clipboard_message_filter.h
@@ -16,9 +16,11 @@ class GURL;
 
 namespace content {
 
+class BrowserContext;
+
 class ClipboardMessageFilter : public BrowserMessageFilter {
  public:
-  ClipboardMessageFilter();
+  ClipboardMessageFilter(BrowserContext* browser_context);
 
   virtual void OverrideThreadForMessage(
       const IPC::Message& message,
@@ -29,7 +31,7 @@ class ClipboardMessageFilter : public BrowserMessageFilter {
   virtual ~ClipboardMessageFilter();
 
   void OnWriteObjectsAsync(const ui::Clipboard::ObjectMap& objects);
-  void OnWriteObjectsSync(const ui::Clipboard::ObjectMap& objects,
+  void OnWriteObjectsSync(ui::Clipboard::ObjectMap objects,
                           base::SharedMemoryHandle bitmap_handle);
 
   void OnGetSequenceNumber(const ui::Clipboard::Buffer buffer,
@@ -64,6 +66,8 @@ class ClipboardMessageFilter : public BrowserMessageFilter {
   // thread.
   static ui::Clipboard* GetClipboard();
 
+  BrowserContext* const browser_context_;
+
   DISALLOW_COPY_AND_ASSIGN(ClipboardMessageFilter);
 };