Proof of concept implementation of context based history filtering.

content/browser/web_contents/web_contents_impl.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_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 267 matching lines @@
   void WasShown() override;
   void WasHidden() override;
   bool NeedToFireBeforeUnload() override;
   void DispatchBeforeUnload(bool for_cross_site_transition) override;
   void Stop() override;
   WebContents* Clone() override;
   void ReloadFocusedFrame(bool ignore_cache) override;
   void Undo() override;
   void Redo() override;
   void Cut() override;
+  void Print() override;
+  void SaveImage() override;
   void Copy() override;
   void CopyToFindPboard() override;
   void Paste() override;
   void PasteAndMatchStyle() override;
   void Delete() override;
   void SelectAll() override;
   void Unselect() override;
   void Replace(const base::string16& word) override;
   void ReplaceMisspelling(const base::string16& word) override;
   void NotifyContextMenuClosed(
@@ skipping 984 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_