Fix: Cursor missing in omnibox after entering a alphabet in NTP 'Search box'

ui/views/controls/textfield/textfield_unittest.cc

Index: ui/views/controls/textfield/textfield_unittest.cc
diff --git a/ui/views/controls/textfield/textfield_unittest.cc b/ui/views/controls/textfield/textfield_unittest.cc
index 45abeecdbe3bf527902236758f8841cefb57b56f..29f81c1713c5883369ef193a75f2d1c2a9e27871 100644
--- a/ui/views/controls/textfield/textfield_unittest.cc
+++ b/ui/views/controls/textfield/textfield_unittest.cc
@@ -396,6 +396,7 @@ class TextfieldTest : public ViewsTestBase, public TextfieldController {
   }
 
   void OnAfterUserAction(Textfield* sender) override {
+    textfield_->SetCursorEnabled(true);
     ++on_after_user_action_;
   }
 
@@ -3112,7 +3113,7 @@ TEST_F(TextfieldTest, AccessiblePasswordTest) {
   EXPECT_TRUE(node_data_protected.HasStateFlag(ui::AX_STATE_PROTECTED));
 }
 
-// Test if the cursor visibility is controlled by |cursor_enabled_| in
+// Verifies if the cursor visibility is controlled by |cursor_enabled_| in
 // RenderText.
 TEST_F(TextfieldTest, CursorVisibility) {
   InitTextfield();
@@ -3129,4 +3130,17 @@ TEST_F(TextfieldTest, CursorVisibility) {
   EXPECT_TRUE(test_api_->IsCursorVisible());
 }
 
+// Verifies if the cursor visibility is changed to true from false after insert
+// charactor in textfield.
+TEST_F(TextfieldTest, CursorVisibilityChangeAfterInserting) {
+  InitTextfield();
+
+  test_api_->GetRenderText()->SetCursorEnabled(false);
+  textfield_->OnBlur();
+  textfield_->OnFocus();
+  EXPECT_FALSE(test_api_->IsCursorVisible());
+  SendKeyEvent('a');
+  EXPECT_TRUE(test_api_->IsCursorVisible());
+}
+
 }  // namespace views