Ignore should-scroll-on-main-thread if main frame is not scrollable

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index f4ccd006865ecafda368fdbd5517aec760b15652..27594a719472c5ecec365f66571210a8e6589761 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -204,6 +204,11 @@ void Internals::resetToConsistentState(Page* page)
         page->mainFrame()->spellChecker().toggleContinuousSpellChecking();
     if (page->mainFrame()->editor().isOverwriteModeEnabled())
         page->mainFrame()->editor().toggleOverwriteModeEnabled();
+
+    if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
+        scrollingCoordinator->reset();
+
+    page->mainFrame()->view()->clear();
 }
 
 Internals::Internals(Document* document)