Moves shared history test helpers into util classes.

components/omnibox/browser/in_memory_url_index.h

Index: components/omnibox/browser/in_memory_url_index.h
diff --git a/components/omnibox/browser/in_memory_url_index.h b/components/omnibox/browser/in_memory_url_index.h
index da8639ccd00090307f1164376b21ea4315d5be87..0943921d5c92201505da313d051eb71ee29c4bf5 100644
--- a/components/omnibox/browser/in_memory_url_index.h
+++ b/components/omnibox/browser/in_memory_url_index.h
@@ -151,6 +151,8 @@ class InMemoryURLIndex : public KeyedService,
   friend class ::HistoryQuickProviderTest;
   friend class InMemoryURLIndexTest;
   friend class InMemoryURLIndexCacheTest;
+  friend void RebuildInMemoryURLIndex(InMemoryURLIndex* index,

[Peter Kasting, 2016/01/31 20:30:43]

This should be removed

[rohitrao (ping after 24h), 2016/02/01 12:46:47]

Good catch, thanks.

+                                      history::HistoryService* history);
   FRIEND_TEST_ALL_PREFIXES(InMemoryURLIndexTest, ExpireRow);
   FRIEND_TEST_ALL_PREFIXES(LimitedInMemoryURLIndexTest, Initialization);