Assume all providers may give zero suggest responses.

chrome/browser/autocomplete/history_quick_provider_unittest.cc

Index: chrome/browser/autocomplete/history_quick_provider_unittest.cc
diff --git a/chrome/browser/autocomplete/history_quick_provider_unittest.cc b/chrome/browser/autocomplete/history_quick_provider_unittest.cc
index a79c1f3ccd09decf898d09daa4827e51334671f6..fcb5838a1a3e2657b51b03809be66ef3a68d6402 100644
--- a/chrome/browser/autocomplete/history_quick_provider_unittest.cc
+++ b/chrome/browser/autocomplete/history_quick_provider_unittest.cc
@@ -292,7 +292,7 @@ void HistoryQuickProviderTest::RunTestWithCursor(
                           metrics::OmniboxEventProto::INVALID_SPEC,
                           prevent_inline_autocomplete, false, true, true,
                           ChromeAutocompleteSchemeClassifier(profile_.get()));
-  provider_->Start(input, false);
+  provider_->Start(input, false, false);
   EXPECT_TRUE(provider_->done());
 
   ac_matches_ = provider_->matches();
@@ -714,6 +714,16 @@ TEST_F(HistoryQuickProviderTest, CullSearchResults) {
                     ASCIIToUTF16(".com"));
 }
 
+TEST_F(HistoryQuickProviderTest, DoesNotProvideMatchesOnFocus) {
+  AutocompleteInput input(ASCIIToUTF16("popularsite"), base::string16::npos,
+                          std::string(), GURL(),
+                          metrics::OmniboxEventProto::INVALID_SPEC,
+                          false, false, true, true,
+                          ChromeAutocompleteSchemeClassifier(profile_.get()));
+  provider_->Start(input, false, true);
+  EXPECT_TRUE(provider_->matches().empty());
+}
+
 // HQPOrderingTest -------------------------------------------------------------
 
 TestURLInfo ordering_test_db[] = {