Make CSSValuePool thread local to ensure correct parsing in colors on workers

third_party/WebKit/Source/core/dom/ExecutionContext.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2012 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 11 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
 
 #ifndef ExecutionContext_h
 #define ExecutionContext_h
 
 #include "core/CoreExport.h"
+#include "core/css/CSSValuePool.h"
 #include "core/dom/ContextLifecycleNotifier.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/SecurityContext.h"
 #include "core/dom/SuspendableTask.h"
 #include "core/fetch/AccessControlStatus.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/ReferrerPolicy.h"
 #include "wtf/Deque.h"
@@ skipping 107 matching lines @@
 
     // Decides whether this context is privileged, as described in
     // https://w3c.github.io/webappsec/specs/powerfulfeatures/#settings-privileged.
     virtual bool isSecureContext(String& errorMessage, const SecureContextCheck = StandardSecureContextCheck) const = 0;
     virtual bool isSecureContext(const SecureContextCheck = StandardSecureContextCheck) const;
 
     virtual String outgoingReferrer() const;
     void setReferrerPolicy(ReferrerPolicy);
     ReferrerPolicy getReferrerPolicy() const { return m_referrerPolicy; }
 
+    // Each worker thread has its own CSS values caches.
+    CSSValuePool* localCssValuePool();
+
 protected:
     ExecutionContext();
     virtual ~ExecutionContext();
 
     virtual const KURL& virtualURL() const = 0;
     virtual KURL virtualCompleteURL(const String&) const = 0;
 
 private:
     bool dispatchErrorEvent(RawPtr<ErrorEvent>, AccessControlStatus);
     void runSuspendableTasks();
@@ skipping 18 matching lines @@
     // Counter that keeps track of how many window interaction calls are allowed
     // for this ExecutionContext. Callers are expected to call
     // |allowWindowInteraction()| and |consumeWindowInteraction()| in order to
     // increment and decrement the counter.
     int m_windowInteractionTokens;
 
     Deque<OwnPtr<SuspendableTask>> m_suspendedTasks;
     bool m_isRunSuspendableTasksScheduled;
 
     ReferrerPolicy m_referrerPolicy;
+
+    Member<CSSValuePool> m_localCssValuePool;
 };
 
 } // namespace blink
 
 #endif // ExecutionContext_h