Rename WebCore namespace to blink in Public

public/web/WebSpeechGrammar.h

Index: public/web/WebSpeechGrammar.h
diff --git a/public/web/WebSpeechGrammar.h b/public/web/WebSpeechGrammar.h
index f0c4cd2c014d1298123f1dd49c802c8250c76a58..e492f8aedf4b11bbf312e955e6d16797329cb487 100644
--- a/public/web/WebSpeechGrammar.h
+++ b/public/web/WebSpeechGrammar.h
@@ -30,7 +30,7 @@
 #include "../platform/WebPrivatePtr.h"
 #include "../platform/WebURL.h"
 
-namespace WebCore {
+namespace blink {
 class SpeechGrammar;
 }
 
@@ -49,12 +49,12 @@ public:
     BLINK_EXPORT void assign(const WebSpeechGrammar&);
 
 #if BLINK_IMPLEMENTATION
-    explicit WebSpeechGrammar(WebCore::SpeechGrammar*);
-    WebSpeechGrammar& operator=(WebCore::SpeechGrammar*);
+    explicit WebSpeechGrammar(blink::SpeechGrammar*);
+    WebSpeechGrammar& operator=(blink::SpeechGrammar*);
 #endif
 
 private:
-    WebPrivatePtr<WebCore::SpeechGrammar> m_private;
+    WebPrivatePtr<blink::SpeechGrammar> m_private;
 };
 
 } // namespace blink