Convert Settings::rootLayerScrolls to RuntimeEnabledFeatures

third_party/WebKit/Source/core/frame/FrameViewTest.cpp

Index: third_party/WebKit/Source/core/frame/FrameViewTest.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameViewTest.cpp b/third_party/WebKit/Source/core/frame/FrameViewTest.cpp
index 5438ffa3f6faa0fd4d4b988dacfb5034e893a72a..614ecb81339079162b42475e983cc4dde144d44b 100644
--- a/third_party/WebKit/Source/core/frame/FrameViewTest.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameViewTest.cpp
@@ -38,17 +38,24 @@ public:
     bool m_hasScheduledAnimation;
 };
 
+typedef bool TestParamRootLayerScrolling;
 class FrameViewTestBase
     : public testing::Test
-    , public testing::WithParamInterface<FrameSettingOverrideFunction> {
+    , public testing::WithParamInterface<TestParamRootLayerScrolling> {
 protected:
     FrameViewTestBase()
         : m_chromeClient(new MockChromeClient)
-    { }
+        , m_originalRootLayerScrollingEnabled(RuntimeEnabledFeatures::rootLayerScrollingEnabled())
+        , m_enableRootLayerScrolling(GetParam())
+    {
+        RuntimeEnabledFeatures::setRootLayerScrollingEnabled(m_enableRootLayerScrolling);
+    }
 
     ~FrameViewTestBase()
     {
         testing::Mock::VerifyAndClearExpectations(&chromeClient());
+        CHECK_EQ(m_enableRootLayerScrolling, RuntimeEnabledFeatures::rootLayerScrollingEnabled());
+        RuntimeEnabledFeatures::setRootLayerScrollingEnabled(m_originalRootLayerScrollingEnabled);
     }
 
     void SetUp() override
@@ -58,8 +65,6 @@ protected:
         clients.chromeClient = m_chromeClient.get();
         m_pageHolder = DummyPageHolder::create(IntSize(800, 600), &clients);
         m_pageHolder->page().settings().setAcceleratedCompositingEnabled(true);
-        if (GetParam())
-            (*GetParam())(m_pageHolder->page().settings());
     }
 
     Document& document() { return m_pageHolder->document(); }
@@ -68,6 +73,8 @@ protected:
 private:
     Persistent<MockChromeClient> m_chromeClient;
     std::unique_ptr<DummyPageHolder> m_pageHolder;
+    bool m_originalRootLayerScrollingEnabled;
+    bool m_enableRootLayerScrolling;
 };
 
 class FrameViewTest : public FrameViewTestBase {
@@ -104,13 +111,8 @@ private:
     RuntimeEnabledFeatures::Backup m_featuresBackup;
 };
 
-INSTANTIATE_TEST_CASE_P(All, FrameViewTest, ::testing::Values(
-    nullptr,
-    &RootLayerScrollsFrameSettingOverride));
-
-INSTANTIATE_TEST_CASE_P(All, FrameViewSlimmingPaintV2Test, ::testing::Values(
-    nullptr,
-    &RootLayerScrollsFrameSettingOverride));
+INSTANTIATE_TEST_CASE_P(All, FrameViewTest, ::testing::Bool());
+INSTANTIATE_TEST_CASE_P(All, FrameViewSlimmingPaintV2Test, ::testing::Bool());
 
 // These tests ensure that FrameView informs the ChromeClient of changes to the
 // paint artifact so that they can be shown to the user (e.g. via the