Rename WebCore namespace to blink in Public

public/platform/WebMediaStreamTrackSourcesRequest.h

Index: public/platform/WebMediaStreamTrackSourcesRequest.h
diff --git a/public/platform/WebMediaStreamTrackSourcesRequest.h b/public/platform/WebMediaStreamTrackSourcesRequest.h
index 11e0862561e8f96470e68159bc10a5d9f8846773..f2752494dcbced349e309a26cb70b24ee779af05 100644
--- a/public/platform/WebMediaStreamTrackSourcesRequest.h
+++ b/public/platform/WebMediaStreamTrackSourcesRequest.h
@@ -32,7 +32,7 @@
 #include "WebString.h"
 #include "WebVector.h"
 
-namespace WebCore {
+namespace blink {
 class MediaStreamTrackSourcesRequest;
 }
 
@@ -72,11 +72,11 @@ public:
     BLINK_PLATFORM_EXPORT void setExtraData(ExtraData*);
 
 #if INSIDE_BLINK
-    BLINK_PLATFORM_EXPORT WebMediaStreamTrackSourcesRequest(WebCore::MediaStreamTrackSourcesRequest*);
+    BLINK_PLATFORM_EXPORT WebMediaStreamTrackSourcesRequest(blink::MediaStreamTrackSourcesRequest*);
 #endif
 
 private:
-    WebPrivatePtr<WebCore::MediaStreamTrackSourcesRequest> m_private;
+    WebPrivatePtr<blink::MediaStreamTrackSourcesRequest> m_private;
 };
 
 } // namespace blink