Skip caching in all scopes

Source/platform/graphics/paint/DisplayItemList.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "platform/graphics/paint/DisplayItemList.h"
 
 #include "platform/NotImplemented.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/TraceEvent.h"
@@ skipping 73 matching lines @@
 {
     ClientScopeIdMap::iterator it = m_clientScopeIdMap.find(client);
     int scopeId;
     if (it == m_clientScopeIdMap.end()) {
         m_clientScopeIdMap.add(client, 0);
         scopeId = 0;
     } else {
         scopeId = ++it->value;
     }
     m_scopeStack.append(Scope(client, scopeId));
+    beginSkippingCache();
 }
 
 void DisplayItemList::endScope(DisplayItemClient client)
 {
     m_scopeStack.removeLast();
+    endSkippingCache();
 }
 
 void DisplayItemList::invalidate(DisplayItemClient client)
 {
     ASSERT(RuntimeEnabledFeatures::slimmingPaintEnabled());
     // Can only be called during layout/paintInvalidation, not during painting.
     ASSERT(m_newDisplayItems.isEmpty());
     updateValidlyCachedClientsIfNeeded();
     m_validlyCachedClients.remove(client);
 }
@@ skipping 352 matching lines @@
 
 void DisplayItemList::replay(GraphicsContext& context) const
 {
     TRACE_EVENT0("blink,benchmark", "DisplayItemList::replay");
     ASSERT(m_newDisplayItems.isEmpty());
     for (auto& displayItem : m_currentDisplayItems)
         displayItem.replay(context);
 }
 
 } // namespace blink