Introduced additional spellcheck related histogram.

chrome/browser/spellcheck_host.h

Index: chrome/browser/spellcheck_host.h
diff --git a/chrome/browser/spellcheck_host.h b/chrome/browser/spellcheck_host.h
index 27ccbc225c992d8b1a7429f73ee9ad7bb4b79c6f..fe3b368ffcdd3f9a2891c0f4ebb6138df847edc2 100644
--- a/chrome/browser/spellcheck_host.h
+++ b/chrome/browser/spellcheck_host.h
@@ -88,8 +88,16 @@ class SpellCheckHost
   // 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