Proof of concept implementation of context based history filtering.

components/history/core/browser/url_row.cc

 // Copyright 2014 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.
 
 #include "components/history/core/browser/url_row.h"
 
 #include <algorithm>
 
 namespace history {
 
@@ skipping 17 matching lines @@
 }
 
 URLRow& URLRow::operator=(const URLRow& other) {
   id_ = other.id_;
   url_ = other.url_;
   title_ = other.title_;
   visit_count_ = other.visit_count_;
   typed_count_ = other.typed_count_;
   last_visit_ = other.last_visit_;
   hidden_ = other.hidden_;
+  context_ = other.context_;
   return *this;
 }
 
 void URLRow::Swap(URLRow* other) {
   std::swap(id_, other->id_);
   url_.Swap(&other->url_);
   title_.swap(other->title_);
   std::swap(visit_count_, other->visit_count_);
   std::swap(typed_count_, other->typed_count_);
   std::swap(last_visit_, other->last_visit_);
   std::swap(hidden_, other->hidden_);
+  std::swap(context_, other->context_);
 }
 
 void URLRow::Initialize() {
   id_ = 0;
   visit_count_ = 0;
   typed_count_ = 0;
   last_visit_ = base::Time();
   hidden_ = false;
+  context_ = CONTEXT_NONE;
 }
 
 
 URLResult::URLResult()
     : blocked_visit_(false) {
 }
 
 URLResult::URLResult(const GURL& url, base::Time visit_time)
     : URLRow(url),
       visit_time_(visit_time),
@@ skipping 20 matching lines @@
   title_match_positions_.swap(other->title_match_positions_);
   std::swap(blocked_visit_, other->blocked_visit_);
 }
 
 // static
 bool URLResult::CompareVisitTime(const URLResult& lhs, const URLResult& rhs) {
   return lhs.visit_time() > rhs.visit_time();
 }
 
 }  // namespace history