Pass AutocompleteProvider::kMaxMatches to InMemoryURLIndex

chrome/browser/history/url_index_private_data.h

Index: chrome/browser/history/url_index_private_data.h
diff --git a/chrome/browser/history/url_index_private_data.h b/chrome/browser/history/url_index_private_data.h
index 0d98584895c8800ebb3deca5b82fa4d332b87ef9..8616fd850f4496fb57484a19dfcfe6a299051abf 100644
--- a/chrome/browser/history/url_index_private_data.h
+++ b/chrome/browser/history/url_index_private_data.h
@@ -65,9 +65,12 @@ class URLIndexPrivateData
   // |kItemsToScoreLimit| limit) will be retained and used for subsequent calls
   // to this function. |bookmark_service| is used to boost a result's score if
   // its URL is referenced by one or more of the user's bookmarks.  |languages|
-  // is used to help parse/format the URLs in the history index.
+  // is used to help parse/format the URLs in the history index.  In total,
+  // |max_matches| of items will be returned in the |ScoredHistoryMatches|
+  // vector.
   ScoredHistoryMatches HistoryItemsForTerms(base::string16 term_string,
                                             size_t cursor_position,
+                                            size_t max_matches,
                                             const std::string& languages,
                                             BookmarkService* bookmark_service);