ui: Cleanup class/struct forward declarations

services/ui/ws/test_utils.cc

Index: services/ui/ws/test_utils.cc
diff --git a/services/ui/ws/test_utils.cc b/services/ui/ws/test_utils.cc
index 8a8b972bc936620266451cff6692f9b76feba4bf..db0daa6d69889be788e6c30eb40cb682802e59da 100644
--- a/services/ui/ws/test_utils.cc
+++ b/services/ui/ws/test_utils.cc
@@ -42,8 +42,6 @@ class TestPlatformDisplay : public PlatformDisplay {
   // PlatformDisplay:
   void Init(PlatformDisplayDelegate* delegate) override {}
   int64_t GetId() const override { return id_; }
-  void SchedulePaint(const ServerWindow* window,
-                     const gfx::Rect& bounds) override {}
   void SetViewportSize(const gfx::Size& size) override {}
   void SetTitle(const base::string16& title) override {}
   void SetCapture() override {}
@@ -53,7 +51,6 @@ class TestPlatformDisplay : public PlatformDisplay {
   }
   void UpdateTextInputState(const ui::TextInputState& state) override {}
   void SetImeVisibility(bool visible) override {}
-  bool IsFramePending() const override { return false; }
   gfx::Rect GetBounds() const override { return display_metrics_.bounds; }
   bool UpdateViewportMetrics(const display::ViewportMetrics& metrics) override {
     if (display_metrics_ == metrics)
@@ -128,25 +125,14 @@ PlatformDisplay* TestPlatformDisplayFactory::CreatePlatformDisplay() {
 
 // TestFrameGeneratorDelegate -------------------------------------------------
 
-TestFrameGeneratorDelegate::TestFrameGeneratorDelegate(
-    std::unique_ptr<ServerWindow> root)
-    : root_(std::move(root)) {}
+TestFrameGeneratorDelegate::TestFrameGeneratorDelegate() {}
 
 TestFrameGeneratorDelegate::~TestFrameGeneratorDelegate() {}
 
-ServerWindow* TestFrameGeneratorDelegate::GetRootWindow() {
-  return root_.get();
-}
-
 bool TestFrameGeneratorDelegate::IsInHighContrastMode() {
   return false;
 }
 
-const display::ViewportMetrics& TestFrameGeneratorDelegate::GetViewportMetrics()
-    const {
-  return metrics_;
-}
-
 // WindowTreeTestApi  ---------------------------------------------------------
 
 WindowTreeTestApi::WindowTreeTestApi(WindowTree* tree) : tree_(tree) {}