[NTP] Fix article suggestion clicks contributing to Most Visited tiles

components/history/core/browser/history_backend_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "components/history/core/browser/history_backend.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 3788 matching lines @@
 
   // Verify that the second term is no longer returned as result, and also check
   // at the low level that it is gone for good. The term corresponding to the
   // first URLRow should not be affected.
   EXPECT_EQ(1u, GetNumberOfMatchingSearchTerms(kTestKeywordId, term1));
   EXPECT_EQ(0u, GetNumberOfMatchingSearchTerms(kTestKeywordId, term2));
   EXPECT_TRUE(mem_backend_->db()->GetKeywordSearchTermRow(row1.id(), NULL));
   EXPECT_FALSE(mem_backend_->db()->GetKeywordSearchTermRow(row2.id(), NULL));
 }
 
+TEST_F(HistoryBackendTest, QueryMostVisitedURLs) {
+  ASSERT_TRUE(backend_.get());
+
+  std::vector<ui::PageTransition> page_transitions;
+  page_transitions.push_back(ui::PAGE_TRANSITION_AUTO_BOOKMARK);  // good.
+  page_transitions.push_back(ui::PAGE_TRANSITION_LINK);           // bad.
+  page_transitions.push_back(ui::PageTransitionFromInt(
+      ui::PAGE_TRANSITION_AUTO_BOOKMARK |
+      ui::PAGE_TRANSITION_IGNORE_FOR_NTP_TILES));         // bad.
+  page_transitions.push_back(ui::PAGE_TRANSITION_TYPED);  // good.
+
+  for (size_t i = 0; i < page_transitions.size(); ++i) {
+    HistoryAddPageArgs args;
+    args.url = GURL("http://example" + base::SizeTToString(i + 1) + ".com");
+    args.time = base::Time::Now() - base::TimeDelta::FromDays(i + 1);
+    args.transition = page_transitions[i];
+    backend_->AddPage(args);
+  }
+
+  MostVisitedURLList most_visited;
+  backend_->QueryMostVisitedURLs(100, 100, &most_visited);
+
+  const base::string16 kSomeTitle;  // Ignored by equality operator.
+  EXPECT_THAT(
+      most_visited,
+      ElementsAre(MostVisitedURL(GURL("http://example1.com"), kSomeTitle),
+                  MostVisitedURL(GURL("http://example4.com"), kSomeTitle)));
+}
+
 }  // namespace history