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

Source/core/paint/LayoutObjectDrawingRecorderTest.cpp

Index: Source/core/paint/LayoutObjectDrawingRecorderTest.cpp
diff --git a/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp b/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp
index 1f5bf1bbed9a315c076241034230f686c8cffe52..104f075d45d39c4af10c38451fcb240d08608eb6 100644
--- a/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp
+++ b/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp
@@ -18,7 +18,9 @@ namespace blink {
 
 class LayoutObjectDrawingRecorderTest : public RenderingTest {
 public:
-    LayoutObjectDrawingRecorderTest() : m_layoutView(nullptr) { }
+    LayoutObjectDrawingRecorderTest()
+        : m_layoutView(nullptr)
+        , m_originalSlimmingPaintEnabled(RuntimeEnabledFeatures::slimmingPaintEnabled()) { }
 
 protected:
     LayoutView& layoutView() { return *m_layoutView; }
@@ -39,10 +41,11 @@ private:
 
     virtual void TearDown() override
     {
-        RuntimeEnabledFeatures::setSlimmingPaintEnabled(false);
+        RuntimeEnabledFeatures::setSlimmingPaintEnabled(m_originalSlimmingPaintEnabled);
     }
 
     LayoutView* m_layoutView;
+    bool m_originalSlimmingPaintEnabled;
 };
 
 namespace {