Cleanup namespace usage in public/platform/{Web[P-W]*,linux/*}.h

public/platform/WebServiceWorkerRequest.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebServiceWorkerRequest_h
 #define WebServiceWorkerRequest_h
 
 #include "WebCommon.h"
 #include "public/platform/WebPrivatePtr.h"
 #include "public/platform/WebReferrerPolicy.h"
@@ skipping 35 matching lines @@
     WebString method() const;
 
     void setHeader(const WebString& key, const WebString& value);
 
     void setReferrer(const WebString&, WebReferrerPolicy);
 
     void setIsReload(bool);
     bool isReload() const;
 
 #if INSIDE_BLINK
-    const blink::HTTPHeaderMap& headers() const;
-    const blink::Referrer& referrer() const;
+    const HTTPHeaderMap& headers() const;
+    const Referrer& referrer() const;
 #endif
 
 private:
     WebPrivatePtr<WebServiceWorkerRequestPrivate> m_private;
 };
 
 } // namespace blink
 
 #endif // WebServiceWorkerRequest_h