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diff --git a/WebCore/bindings/v8/V8ConsoleMessage.h b/WebCore/bindings/v8/V8ConsoleMessage.h
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+++ b/WebCore/bindings/v8/V8ConsoleMessage.h
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+/*
+ * Copyright (C) 2009 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:
+ * 
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY 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 V8ConsoleMessage_h
+#define V8ConsoleMessage_h
+
+#include "PlatformString.h"
+#include <v8.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+    
+    class Page;
+
+    // V8ConsoleMessage encapsulates everything needed to
+    // log messages originating from JavaScript to the console.
+    class V8ConsoleMessage {
+    public:
+        V8ConsoleMessage(const String& string, const String& sourceID, unsigned lineNumber);
+
+        // Add a message to the console. May end up calling JavaScript code
+        // indirectly through the inspector so only call this function when
+        // it is safe to do allocations.
+        void dispatchNow(Page*);
+
+        // Add a message to the console but delay the reporting until it
+        // is safe to do so: Either when we leave JavaScript execution or
+        // when adding other console messages. The primary purpose of this
+        // method is to avoid calling into V8 to handle console messages
+        // when the VM is in a state that does not support GCs or allocations.
+        // Delayed messages are always reported in the page corresponding
+        // to the active context.
+        void dispatchLater();
+
+        // Process any delayed messages. May end up calling JavaScript code
+        // indirectly through the inspector so only call this function when
+        // it is safe to do allocations.
+        static void processDelayed();
+
+        // Convenience class for ensuring that delayed messages in the
+        // ConsoleMessageManager are processed quickly.
+        class Scope {
+        public:
+            Scope() { V8ConsoleMessage::processDelayed(); }
+            ~Scope() { V8ConsoleMessage::processDelayed(); }
+        };
+
+        // Callback from V8.
+        static void handler(v8::Handle<v8::Message>, v8::Handle<v8::Value> data);
+
+    private:
+        const String m_string;
+        const String m_sourceID;
+        const unsigned m_lineNumber;
+
+        // All delayed messages are stored in this vector. If the vector
+        // is 0, there are no delayed messages.
+        static Vector<V8ConsoleMessage>* m_delayedMessages;
+    };
+
+} // namespace WebCore
+
+#endif // V8ConsoleMessage_h