Fix a unit test for single process mash.

- ArcVoiceInteractionFrameworkServiceTest.CapturingScreenshotBlocksIncognitoWindows

Bug: 905430
Change-Id: If332da0d0abcd722a82a51c9a84bc39d2c0735e3
Reviewed-on: https://chromium-review.googlesource.com/c/1354678Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613141}

chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service_unittest.cc

@@ -100,8 +100,8 @@ class TestHighlighterController : public ash::mojom::HighlighterController,
 
 std::unique_ptr<TestBrowserWindow> CreateTestBrowserWindow(
     aura::Window* parent) {
-  auto window =
-      std::make_unique<aura::Window>(nullptr, aura::client::WINDOW_TYPE_NORMAL);
+  auto window = std::make_unique<aura::Window>(
+      nullptr, aura::client::WINDOW_TYPE_NORMAL, parent->env());
   window->Init(ui::LAYER_TEXTURED);
   window->SetBounds(gfx::Rect(0, 0, 200, 200));
   parent->AddChild(window.get());