Clear the clipboard closing Incognito window

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index ef202011c16004e50f2f6afee24afcbf6ad48f4d..98015efab8fb95b62eb06492eb9174d0d9447998 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -21,6 +21,7 @@
 #include "chrome/browser/character_encoding.h"
 #include "chrome/browser/chrome_benchmarking_message_filter.h"
 #include "chrome/browser/chrome_quota_permission_context.h"
+#include "chrome/browser/clipboard/incognito_marker.h"
 #include "chrome/browser/content_settings/content_settings_utils.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
@@ -94,6 +95,7 @@
 #include "content/public/browser/browser_url_handler.h"
 #include "content/public/browser/child_process_data.h"
 #include "content/public/browser/child_process_security_policy.h"
+#include "content/public/browser/clipboard_write_callback_params.h"
 #include "content/public/browser/compositor_util.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
@@ -1947,6 +1949,14 @@ FilePath ChromeContentBrowserClient::GetHyphenDictionaryDirectory() {
   return directory.Append(FILE_PATH_LITERAL("Hyphen"));
 }
 
+void ChromeContentBrowserClient::BeforeWriteToClipboard(
+      const content::ClipboardWriteCallbackParams& params) {
+  DCHECK(params.browser_context != NULL);
+  Profile* profile = Profile::FromBrowserContext(params.browser_context);
+  DCHECK(profile != NULL);
+  AddIncognitoMarkerForOffTheRecordProfile(params.objects, profile);
+}
+
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 void ChromeContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
     const CommandLine& command_line,