Clear the clipboard closing Incognito window

content/public/browser/content_browser_client.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 50 matching lines @@
 class QuotaPermissionContext;
 class RenderProcessHost;
 class RenderViewHost;
 class RenderViewHostDelegateView;
 class ResourceContext;
 class SiteInstance;
 class SpeechRecognitionManagerDelegate;
 class WebContents;
 class WebContentsView;
 class WebContentsViewDelegate;
+struct ClipboardWriteCallbackParams;
 struct MainFunctionParams;
 struct ShowDesktopNotificationHostMsgParams;
 
 // Embedder API (or SPI) for participating in browser logic, to be implemented
 // by the client of the content browser. See ChromeContentBrowserClient for the
 // principal implementation. The methods are assumed to be called on the UI
 // thread unless otherwise specified. Use this "escape hatch" sparingly, to
 // avoid the embedder interface ballooning and becoming very specific to Chrome.
 // (Often, the call out to the client can happen in a different part of the code
 // that either already has a hook out to the embedder, or calls out to one of
@@ skipping 356 matching lines @@
 
   // Returns true if renderer processes can use Pepper TCP/UDP sockets from
   // the given origin and connection type.
   virtual bool AllowPepperSocketAPI(BrowserContext* browser_context,
                                     const GURL& url,
                                     const SocketPermissionRequest& params);
 
   // Returns the directory containing hyphenation dictionaries.
   virtual FilePath GetHyphenDictionaryDirectory();
 
+  // Called before writing clipboard content, thus allowing an embedder to
+  // modify the contents of Clipboard::ObjectMap.
+  virtual void BeforeWriteToClipboard(
+      const ClipboardWriteCallbackParams& params) {}
+
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   // Populates |mappings| with all files that need to be mapped before launching
   // a child process.
   virtual void GetAdditionalMappedFilesForChildProcess(
       const CommandLine& command_line,
       int child_process_id,
       std::vector<FileDescriptorInfo>* mappings) {}
 #endif
 
 #if defined(OS_WIN)
   // Returns the name of the dll that contains cursors and other resources.
   virtual const wchar_t* GetResourceDllName();
 #endif
 
 #if defined(USE_NSS)
   // Return a delegate to authenticate and unlock |module|.
   // This is called on a worker thread.
   virtual
       crypto::CryptoModuleBlockingPasswordDelegate* GetCryptoPasswordDelegate(
           const GURL& url);
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_