[ConsentV2] Create field trial for Consent V2 NTP experiment

Change-Id: I623046c73eb3b2c4b9448392fcafd8461fae1e4f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3572830
Reviewed-by: Yue Zhang <yuezhanggg@chromium.org>
Commit-Queue: Mei Liang <meiliang@chromium.org>
Auto-Submit: Mei Liang <meiliang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#990256}

chrome/test/data/webui/new_tab_page/modules/cart/module_test.ts

@@ -36,7 +36,10 @@ suite('NewTabPageModulesChromeCartModuleTest', () => {
 
   suite('Normal cart without rule-based discount', () => {
     suiteSetup(() => {
-      loadTimeData.overrideValues({ruleBasedDiscountEnabled: false});
+      loadTimeData.overrideValues({
+        ruleBasedDiscountEnabled: false,
+        modulesCartDiscountConsentVariation: DiscountConsentVariation.Default
+      });
     });
 
     test('creates no module if no cart item', async () => {
@@ -732,15 +735,17 @@ suite('NewTabPageModulesChromeCartModuleTest', () => {
       // Arrange.
       const moduleElement =
           await chromeCartDescriptor.initialize(0) as ChromeCartModuleElement;
-      assertTrue(!!moduleElement);
+      assertTrue(!!moduleElement, 'Module should exist');
       document.body.append(moduleElement);
       moduleElement.$.consentCardElement.render();
 
       // Assert.
       const consentCard = $$<HTMLElement>(moduleElement, '#consentCard')!;
       const consentToast = moduleElement.$.confirmDiscountConsentToast;
-      assertEquals(true, isVisible(consentCard));
-      assertEquals(false, consentToast.open);
+      assertEquals(
+          true, isVisible(consentCard), 'Consent card should be visible');
+      assertEquals(
+          false, consentToast.open, 'Consent toast should not be opened');
       assertEquals(
           loadTimeData.getString('modulesCartDiscountConsentContent'),
           consentCard.querySelector<HTMLElement>('#consentContent')!.innerText);
@@ -760,8 +765,12 @@ suite('NewTabPageModulesChromeCartModuleTest', () => {
       await flushTasks();
 
       // Assert.
-      assertEquals(false, isVisible(consentCard));
-      assertEquals(true, consentToast.open);
+      assertEquals(
+          false, isVisible(consentCard),
+          'Consent card should not be visible after clicking the cancel button');
+      assertEquals(
+          true, consentToast.open,
+          'Consent toast should be opened after clicking the cancel button');
       assertEquals(
           'Reject confirmation!',
           moduleElement.$.confirmDiscountConsentMessage.innerText);
@@ -771,24 +780,33 @@ suite('NewTabPageModulesChromeCartModuleTest', () => {
       moduleElement.$.confirmDiscountConsentButton.click();
 
       // Assert.
-      assertEquals(false, consentToast.open);
-      assertEquals(false, isVisible(consentCard));
+      assertEquals(
+          false, consentToast.open,
+          'Consent toast should not be opened after acting on the toast');
+      assertEquals(
+          false, isVisible(consentCard),
+          'Consent card should not be visible after acting on the toast');
 
       // Act.
       moduleElement.showDiscountConsent = true;
       moduleElement.$.consentCardElement.render();
 
       // Assert.
-      assertEquals(true, isVisible(consentCard));
+      assertEquals(
+          true, isVisible(consentCard), 'Consent card should be visible');
       assertEquals(0, metrics.count('NewTabPage.Carts.AcceptDiscountConsent'));
 
       // Act.
       consentCard.querySelector<HTMLElement>('#actionButton')!.click();
       await flushTasks();
 
       // Assert.
-      assertEquals(false, isVisible(consentCard));
-      assertEquals(true, consentToast.open);
+      assertEquals(
+          false, isVisible(consentCard),
+          'Consent card should not be visible after accepting');
+      assertEquals(
+          true, consentToast.open,
+          'Consent toast should be opened after accepting');
       assertEquals(
           'Accept confirmation!',
           moduleElement.$.confirmDiscountConsentMessage.innerText);
@@ -797,8 +815,12 @@ suite('NewTabPageModulesChromeCartModuleTest', () => {
       moduleElement.$.confirmDiscountConsentButton.click();
 
       // Assert.
-      assertEquals(false, consentToast.open);
-      assertEquals(false, isVisible(consentCard));
+      assertEquals(
+          false, consentToast.open,
+          'Consent toast should not be opened after acting on confirm toast');
+      assertEquals(
+          false, isVisible(consentCard),
+          'Consent card should not be visible after confirm toast');
       assertEquals(1, metrics.count('NewTabPage.Carts.AcceptDiscountConsent'));
     });
 

testing/variations/fieldtrial_testing_config.json

@@ -2801,6 +2801,30 @@
             ]
         }
     ],
+    "DiscountConsentV2": [
+        {
+            "platforms": [
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "enabled_ntp_dialog_20220323",
+                    "params": {
+                        "discount-consent-ntp-variation": "3",
+                        "step-one-one-cart-content": "Get discount codes for $1",
+                        "step-one-three-carts-content": "Get discount codes for $1, $2, and more",
+                        "step-one-two-carts-content": "Get discount codes for $1 and $2",
+                        "step-two-content": "Let Google use your carts to find personalized discounts when available"
+                    },
+                    "enable_features": [
+                        "DiscountConsentV2"
+                    ]
+                }
+            ]
+        }
+    ],
     "DnsHttpsSvcbSchemeUpgrade": [
         {
             "platforms": [