Revert of Remove platform/NotImplemented.*.

third_party/WebKit/Source/platform/NotImplemented.h

Index: third_party/WebKit/Source/platform/NotImplemented.h
diff --git a/third_party/WebKit/Source/platform/NotImplemented.h b/third_party/WebKit/Source/platform/NotImplemented.h
new file mode 100644
index 0000000000000000000000000000000000000000..f9009ec2f7f577dc98f0d9e60221a515ef804378
--- /dev/null
+++ b/third_party/WebKit/Source/platform/NotImplemented.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2007 Apple Computer, 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
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 NotImplemented_h
+#define NotImplemented_h
+
+#include "platform/PlatformExport.h"
+#include "wtf/Assertions.h"
+
+#if LOG_DISABLED
+    #define notImplemented() ((void)0)
+#else
+
+namespace blink {
+PLATFORM_EXPORT WTFLogChannel* notImplementedLoggingChannel();
+} // namespace blink
+
+#define notImplemented() do { \
+        static bool havePrinted = false; \
+        if (!havePrinted) { \
+            WTFLogVerbose(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, blink::notImplementedLoggingChannel(), "UNIMPLEMENTED: "); \
+            havePrinted = true; \
+        } \
+    } while (0)
+
+#endif // NDEBUG
+
+#endif // NotImplemented_h