Update ActivityLog detection to use previous values, hrefs.

chrome/browser/extensions/activity_log/uma_policy.h

 // Copyright 2013 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 CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_UMA_POLICY_H_
 #define CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_UMA_POLICY_H_
 
 #include <map>
 #include <string>
 
@@ skipping 30 matching lines @@
     CREATED_SCRIPT,
     CREATED_IFRAME,
     CREATED_DIV,
     CREATED_LINK,
     CREATED_INPUT,
     CREATED_EMBED,
     CREATED_OBJECT,
     AD_INJECTED,
     AD_REMOVED,
     AD_REPLACED,
+    AD_LIKELY_REPLACED,
     MAX_STATUS  // Insert new page statuses right before this one.
   };
 
   explicit UmaPolicy(Profile* profile);
 
   // ActivityLogPolicy implementation.
   virtual void ProcessAction(scoped_refptr<Action> action) OVERRIDE;
   virtual void Close() OVERRIDE;
 
   // Gets the histogram name associated with each PageStatus.
@@ skipping 56 matching lines @@
 
   FRIEND_TEST_ALL_PREFIXES(UmaPolicyTest, CleanURLTest);
   FRIEND_TEST_ALL_PREFIXES(UmaPolicyTest, MatchActionToStatusTest);
   FRIEND_TEST_ALL_PREFIXES(UmaPolicyTest, ProcessActionTest);
   FRIEND_TEST_ALL_PREFIXES(UmaPolicyTest, SiteUrlTest);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_UMA_POLICY_H_