Add passwordLeakCheckEnabled to control leak checking behavior

This will allow users to opt out of leak check if desired.
Also added a missing test for passwordAutofillEnabled.

Bug: 1096281
Change-Id: Ibff3bf6fdb7b6bac6170f6b9aaa44938076f49fd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401943Reviewed-by: Hiroshi Ichikawa <ichikawa@chromium.org>
Commit-Queue: John Wu <jzw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805820}

ios/web_view/internal/cwv_preferences.mm

@@ -72,4 +72,14 @@
       password_manager::prefs::kCredentialsEnableService);
 }
 
+- (void)setPasswordLeakCheckEnabled:(BOOL)enabled {
+  _prefService->SetBoolean(
+      password_manager::prefs::kPasswordLeakDetectionEnabled, enabled);
+}
+
+- (BOOL)isPasswordLeakCheckEnabled {
+  return _prefService->GetBoolean(
+      password_manager::prefs::kPasswordLeakDetectionEnabled);
+}
+
 @end

ios/web_view/internal/cwv_preferences_unittest.mm

@@ -37,6 +37,8 @@ class CWVPreferencesTest : public PlatformTest {
     pref_registry->RegisterBooleanPref(
         password_manager::prefs::kCredentialsEnableService, true);
     pref_registry->RegisterBooleanPref(prefs::kOfferTranslateEnabled, true);
+    pref_registry->RegisterBooleanPref(
+        password_manager::prefs::kPasswordLeakDetectionEnabled, true);
 
     scoped_refptr<PersistentPrefStore> pref_store = new InMemoryPrefStore();
     PrefServiceFactory factory;
@@ -72,4 +74,18 @@ TEST_F(CWVPreferencesTest, TranslationEnabled) {
   EXPECT_FALSE(preferences_.translationEnabled);
 }
 
+// Tests CWVPreferences |passwordAutofillEnabled|.
+TEST_F(CWVPreferencesTest, PasswordAutofillEnabled) {
+  EXPECT_TRUE(preferences_.passwordAutofillEnabled);
+  preferences_.passwordAutofillEnabled = NO;
+  EXPECT_FALSE(preferences_.passwordAutofillEnabled);
+}
+
+// Tests CWVPreferences |passwordLeakCheckEnabled|.
+TEST_F(CWVPreferencesTest, PasswordLeakCheckEnabled) {
+  EXPECT_TRUE(preferences_.passwordLeakCheckEnabled);
+  preferences_.passwordLeakCheckEnabled = NO;
+  EXPECT_FALSE(preferences_.passwordLeakCheckEnabled);
+}
+
 }  // namespace ios_web_view

ios/web_view/public/cwv_preferences.h

@@ -43,6 +43,11 @@ CWV_EXPORT
 @property(nonatomic, assign, getter=isPasswordAutofillEnabled)
     BOOL passwordAutofillEnabled;
 
+// Whether or not password leak checks will be performed after successful form
+// submission. Defaults to |YES|.
+@property(nonatomic, assign, getter=isPasswordLeakCheckEnabled)
+    BOOL passwordLeakCheckEnabled;
+
 - (instancetype)init NS_UNAVAILABLE;
 
 // Resets all translation settings back to default. In particular, this will