Rename WebCore namespace to blink in Public

public/web/WebTextRun.h

Index: public/web/WebTextRun.h
diff --git a/public/web/WebTextRun.h b/public/web/WebTextRun.h
index 64504eff223b1f5c34d8abec093a58f7ab12678d..ca5d6a8e2ea96e868726bf0d8d62b3dc2cfaa455 100644
--- a/public/web/WebTextRun.h
+++ b/public/web/WebTextRun.h
@@ -34,7 +34,7 @@
 #include "../platform/WebString.h"
 
 #if BLINK_IMPLEMENTATION
-namespace WebCore { class TextRun; }
+namespace blink { class TextRun; }
 #endif
 
 namespace blink {
@@ -57,9 +57,9 @@ struct WebTextRun {
     bool directionalOverride;
 
 #if BLINK_IMPLEMENTATION
-    // The resulting WebCore::TextRun will refer to the text in this
+    // The resulting blink::TextRun will refer to the text in this
     // struct, so "this" must outlive the WebCore text run.
-    operator WebCore::TextRun() const;
+    operator blink::TextRun() const;
 #endif
 };