Fix issues of display item client cache flags

third_party/WebKit/Source/platform/graphics/paint/DisplayItemClient.h

 // Copyright 2015 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.
 
 #ifndef DisplayItemClient_h
 #define DisplayItemClient_h
 
 #include "platform/PlatformExport.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/PaintInvalidationReason.h"
@@ skipping 47 matching lines @@
         // Clear should-keep-alive of DisplayItemClients in a subsequence if this
         // object is a subsequence.
         endShouldKeepAliveAllClients(this);
 #endif
     }
 
     PaintInvalidationReason getPaintInvalidationReason() const { return m_cacheGenerationOrInvalidationReason.getPaintInvalidationReason(); }
 
     // A client is considered "just created" if its display items have never been committed.
     bool isJustCreated() const { return m_cacheGenerationOrInvalidationReason.isJustCreated(); }
+    void clearIsJustCreated() const { m_cacheGenerationOrInvalidationReason.clearIsJustCreated(); }
 
 private:
     friend class FakeDisplayItemClient;
     friend class PaintController;
 
     // Holds a unique cache generation id of DisplayItemClients and PaintControllers,
     // or PaintInvalidationReason if the DisplayItemClient or PaintController is
     // invalidated.
     //
     // A paint controller sets its cache generation to DisplayItemCacheGeneration::next()
@@ skipping 30 matching lines @@
         {
             return m_value >= kFirstValidGeneration && other.m_value >= kFirstValidGeneration && m_value == other.m_value;
         }
 
         PaintInvalidationReason getPaintInvalidationReason() const
         {
             return m_value < kJustCreated ? static_cast<PaintInvalidationReason>(m_value) : PaintInvalidationNone;
         }
 
         bool isJustCreated() const { return m_value == kJustCreated; }
+        void clearIsJustCreated() { m_value = static_cast<ValueType>(PaintInvalidationFull); }
 
     private:
         typedef uint32_t ValueType;
         explicit CacheGenerationOrInvalidationReason(ValueType value) : m_value(value) { }
 
         static const ValueType kJustCreated = static_cast<ValueType>(PaintInvalidationReasonMax) + 1;
         static const ValueType kFirstValidGeneration = static_cast<ValueType>(PaintInvalidationReasonMax) + 2;
         static ValueType s_nextGeneration;
         ValueType m_value;
     };
 
     bool displayItemsAreCached(CacheGenerationOrInvalidationReason other) const { return m_cacheGenerationOrInvalidationReason.matches(other); }
     void setDisplayItemsCached(CacheGenerationOrInvalidationReason cacheGeneration) const { m_cacheGenerationOrInvalidationReason = cacheGeneration; }
 
     mutable CacheGenerationOrInvalidationReason m_cacheGenerationOrInvalidationReason;
 };
 
 inline bool operator==(const DisplayItemClient& client1, const DisplayItemClient& client2) { return &client1 == &client2; }
 inline bool operator!=(const DisplayItemClient& client1, const DisplayItemClient& client2) { return &client1 != &client2; }
 
 } // namespace blink
 
 #endif // DisplayItemClient_h