[SP] Save and restore slimming paint enabled state in SP-specific unit tests.

Source/core/paint/LayerClipRecorderTest.cpp

Index: Source/core/paint/LayerClipRecorderTest.cpp
diff --git a/Source/core/paint/LayerClipRecorderTest.cpp b/Source/core/paint/LayerClipRecorderTest.cpp
index 77449e5af986a5fb3841d9dbd2740104746f02c0..ac48cd642890fd44d2c08ac39b2507a474d7b51d 100644
--- a/Source/core/paint/LayerClipRecorderTest.cpp
+++ b/Source/core/paint/LayerClipRecorderTest.cpp
@@ -20,7 +20,9 @@ namespace {
 
 class LayerClipRecorderTest : public RenderingTest {
 public:
-    LayerClipRecorderTest() : m_layoutView(nullptr) { }
+    LayerClipRecorderTest()
+        : m_layoutView(nullptr)
+        , m_originalSlimmingPaintEnabled(RuntimeEnabledFeatures::slimmingPaintEnabled()) { }
 
 protected:
     LayoutView& layoutView() { return *m_layoutView; }
@@ -37,8 +39,13 @@ private:
         m_layoutView = document().view()->layoutView();
         ASSERT_TRUE(m_layoutView);
     }
+    virtual void TearDown() override
+    {
+        RuntimeEnabledFeatures::setSlimmingPaintEnabled(m_originalSlimmingPaintEnabled);
+    }
 
     LayoutView* m_layoutView;
+    bool m_originalSlimmingPaintEnabled;
 };
 
 void drawEmptyClip(GraphicsContext& context, LayoutView& layoutView, PaintPhase phase, const FloatRect& bound)