Rename WebCore namespace to blink in Platform

Source/platform/NotImplemented.h

Index: Source/platform/NotImplemented.h
diff --git a/Source/platform/NotImplemented.h b/Source/platform/NotImplemented.h
index 7467efaa32b2342623415bf95fea0ad269c70b89..f3c4bc28b63e9bcd4624c44a4be0804af45007cd 100644
--- a/Source/platform/NotImplemented.h
+++ b/Source/platform/NotImplemented.h
@@ -33,14 +33,14 @@
     #define notImplemented() ((void)0)
 #else
 
-namespace WebCore {
+namespace blink {
 PLATFORM_EXPORT WTFLogChannel* notImplementedLoggingChannel();
 }
 
 #define notImplemented() do { \
         static bool havePrinted = false; \
         if (!havePrinted) { \
-            WTFLogVerbose(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, WebCore::notImplementedLoggingChannel(), "UNIMPLEMENTED: "); \
+            WTFLogVerbose(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, blink::notImplementedLoggingChannel(), "UNIMPLEMENTED: "); \
             havePrinted = true; \
         } \
     } while (0)