Add EXPECT_CALL to fix warning during unit_test run for Hats

chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc

Index: chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc
diff --git a/chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc b/chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc
index cc69995ddde973342e454e8ebc65164c4f82bec9..6486c88e183cb4b1b7289e8f6cb001be83ac19dd 100644
--- a/chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc
+++ b/chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc
@@ -123,7 +123,7 @@ class HatsNotificationControllerTest : public BrowserWithTestWindowTest {
   }
 
   scoped_refptr<HatsNotificationController> InstantiateHatsController() {
-    MockImageFetcher* mock_image_fetcher_ = new MockImageFetcher;
+    mock_image_fetcher_ = new MockImageFetcher;
     // The initialization will fail since the function IsNewDevice() will return
     // true.
     scoped_refptr<HatsNotificationController> hats_notification_controller =
@@ -177,6 +177,7 @@ class HatsNotificationControllerTest : public BrowserWithTestWindowTest {
 
   TestingProfile profile_;
   StrictMock<MockNetworkPortalDetector> mock_network_portal_detector_;
+  MockImageFetcher* mock_image_fetcher_;
 
  private:
   std::unique_ptr<TestingProfileManager> profile_manager_;
@@ -226,6 +227,17 @@ TEST_F(HatsNotificationControllerTest, OldDevice_ShouldShowNotification) {
               RemoveObserver(hats_notification_controller.get()))
       .Times(2);
 
+  EXPECT_CALL(*mock_image_fetcher_,
+              StartOrQueueNetworkRequest(
+                  HatsNotificationController::kImageFetcher1xId,
+                  GURL(HatsNotificationController::kGoogleIcon1xUrl), _))
+      .Times(1);
+  EXPECT_CALL(*mock_image_fetcher_,
+              StartOrQueueNetworkRequest(
+                  HatsNotificationController::kImageFetcher2xId,
+                  GURL(HatsNotificationController::kGoogleIcon2xUrl), _))
+      .Times(1);
+
   hats_notification_controller->Initialize(false);
 
   // Finally check if notification was launched to confirm initialization.