Remove references to DB thread from unit test.

chrome/browser/engagement/important_sites_usage_counter_unittest.cc

Index: chrome/browser/engagement/important_sites_usage_counter_unittest.cc
diff --git a/chrome/browser/engagement/important_sites_usage_counter_unittest.cc b/chrome/browser/engagement/important_sites_usage_counter_unittest.cc
index 252221f19cb29923e18c6d7afaa02219d98d1056..c9278cf9b7bc1f5d28123bcca8a7ddce8353dbd7 100644
--- a/chrome/browser/engagement/important_sites_usage_counter_unittest.cc
+++ b/chrome/browser/engagement/important_sites_usage_counter_unittest.cc
@@ -9,6 +9,7 @@
 #include "base/files/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "base/test/histogram_tester.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/browser_thread.h"
@@ -35,11 +36,10 @@ class ImportantSitesUsageCounterTest : public testing::Test {
   TestingProfile* profile() { return &profile_; }
 
   QuotaManager* CreateQuotaManager() {
-    quota_manager_ = new QuotaManager(
-        false, temp_dir_.GetPath(),
-        BrowserThread::GetTaskRunnerForThread(BrowserThread::IO).get(),
-        BrowserThread::GetTaskRunnerForThread(BrowserThread::DB).get(), nullptr,
-        storage::GetQuotaSettingsFunc());
+    quota_manager_ = new QuotaManager(false, temp_dir_.GetPath(),
+                                      base::ThreadTaskRunnerHandle::Get(),
+                                      base::ThreadTaskRunnerHandle::Get(),
+                                      nullptr, storage::GetQuotaSettingsFunc());
     return quota_manager_.get();
   }
 
@@ -82,7 +82,7 @@ class ImportantSitesUsageCounterTest : public testing::Test {
   const std::vector<ImportantDomainInfo>& domain_info() { return domain_info_; }
 
  private:
-  content::TestBrowserThreadBundle thread_bundle_;
+  content::TestBrowserThreadBundle thread_bundle;

[fdoray, 2017/06/27 13:28:56]

Do not remove the trailing underscore.

   TestingProfile profile_;
   base::ScopedTempDir temp_dir_;
   scoped_refptr<QuotaManager> quota_manager_;