Handle modified displays in mustash.

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 f5b9ea86f78f618d0c6fc3bfe3ecc15ab539671e..3f9195c791fb9a75392f4e18991cdfc7a8d253c8 100644
--- a/services/ui/ws/test_utils.cc
+++ b/services/ui/ws/test_utils.cc
@@ -54,24 +54,27 @@ class TestPlatformDisplay : public PlatformDisplay {
   void SetCursorById(mojom::Cursor cursor) override {
     *cursor_storage_ = cursor;
   }
-  display::Display::Rotation GetRotation() override {
-    return display::Display::Rotation::ROTATE_0;
-  }
-  float GetDeviceScaleFactor() override {
-    return display_metrics_.device_scale_factor;
-  }
   void UpdateTextInputState(const ui::TextInputState& state) override {}
   void SetImeVisibility(bool visible) override {}
   bool IsFramePending() const override { return false; }
   void RequestCopyOfOutput(
       std::unique_ptr<cc::CopyOutputRequest> output_request) override {}
   gfx::Rect GetBounds() const override { return display_metrics_.bounds; }
+  bool UpdateViewportMetrics(const display::ViewportMetrics& metrics) override {
+    if (display_metrics_ == metrics)
+      return false;
+    display_metrics_ = metrics;
+    return true;
+  }
+  const display::ViewportMetrics& GetViewportMetrics() const override {
+    return display_metrics_;
+  }
   bool IsPrimaryDisplay() const override { return is_primary_; }
   void OnGpuChannelEstablished(
       scoped_refptr<gpu::GpuChannelHost> host) override {}
 
  private:
-  ViewportMetrics display_metrics_;
+  display::ViewportMetrics display_metrics_;
 
   int64_t id_;
   bool is_primary_;
@@ -144,7 +147,8 @@ bool TestFrameGeneratorDelegate::IsInHighContrastMode() {
   return false;
 }
 
-const ViewportMetrics& TestFrameGeneratorDelegate::GetViewportMetrics() {
+const display::ViewportMetrics& TestFrameGeneratorDelegate::GetViewportMetrics()
+    const {
   return metrics_;
 }