[Password Manager Cleanup] Replaces NULL -> nullptr.

components/password_manager/core/browser/password_manager_unittest.cc

Index: components/password_manager/core/browser/password_manager_unittest.cc
diff --git a/components/password_manager/core/browser/password_manager_unittest.cc b/components/password_manager/core/browser/password_manager_unittest.cc
index 36ef7afa0e1f3f1045ce60b346e12d30d8f8edb6..1ec170b7f73c8f55389143332a65ab96e5058cdd 100644
--- a/components/password_manager/core/browser/password_manager_unittest.cc
+++ b/components/password_manager/core/browser/password_manager_unittest.cc
@@ -111,7 +111,7 @@ class PasswordManagerTest : public testing::Test {
 
     manager_.reset(new TestPasswordManager(&client_));
     password_autofill_manager_.reset(
-        new PasswordAutofillManager(client_.GetDriver(), NULL));
+        new PasswordAutofillManager(client_.GetDriver(), nullptr));
 
     EXPECT_CALL(driver_, GetPasswordManager())
         .WillRepeatedly(Return(manager_.get()));
@@ -126,7 +126,7 @@ class PasswordManagerTest : public testing::Test {
 
   void TearDown() override {
     store_->Shutdown();
-    store_ = NULL;
+    store_ = nullptr;
   }
 
   PasswordForm MakeSimpleForm() {
@@ -456,7 +456,7 @@ TEST_F(PasswordManagerTest, FormSubmitAfterNavigateInPage) {
   manager()->OnPasswordFormsRendered(&driver_, observed,
                                      true);  // The post-navigation layout.
 
-  ASSERT_FALSE(NULL == form_to_save.get());
+  ASSERT_TRUE(form_to_save);
   EXPECT_CALL(*store_, AddLogin(FormMatches(form)));
 
   // Simulate saving the form, as if the info bar was accepted.