Introduced additional spellcheck related histogram.

chrome/browser/spellcheck_host.h

 // Copyright (c) 2011 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_SPELLCHECK_HOST_H_
 #define CHROME_BROWSER_SPELLCHECK_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 70 matching lines @@
   virtual const std::string& GetLastAddedFile() const = 0;
 
   virtual const std::string& GetLanguage() const = 0;
 
   virtual bool IsUsingPlatformChecker() const = 0;
 
   // Collects status of spellchecking enabling state, which is
   // to be uploaded via UMA
   virtual void RecordCheckedWordStats(bool misspell) = 0;
 
+  // Collects a histogram for context menu showing as a spell correction
+  // attempt to be uploaded via UMA.
+  // The value of |delta| is accumulated to the total count, and only
+  // update tracked ratio if |delta| is zero.
+  virtual void RecordSuggestionStats(int delta) = 0;
+
   // Collects a histogram for misspelled word replacement
-  // to be uploaded via UMA
+  // to be uploaded via UMA.
+  // The value of |delta| is accumulated to the total count, and only
+  // update tracked ratio if |delta| is zero.
   virtual void RecordReplacedWordStats(int delta) = 0;
 
   // This function computes a vector of strings which are to be displayed in
   // the context menu over a text area for changing spell check languages. It
   // returns the index of the current spell check language in the vector.
   // TODO(port): this should take a vector of string16, but the implementation
   // has some dependencies in l10n util that need porting first.
   static int GetSpellCheckLanguages(Profile* profile,
                                     std::vector<std::string>* languages);
 };
 
 #endif  // CHROME_BROWSER_SPELLCHECK_HOST_H_