Rename WebCore namespace to blink in Platform

Source/platform/ContentDecryptionModuleResult.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 ContentDecryptionModuleResult_h
 #define ContentDecryptionModuleResult_h
 
 #include "platform/heap/Handle.h"
 #include "public/platform/WebContentDecryptionModuleException.h"
 #include "public/platform/WebContentDecryptionModuleResult.h"
 
 namespace blink {
 class WebString;
 }
 
-namespace WebCore {
+namespace blink {
 
 // Used to notify completion of a CDM operation.
 class ContentDecryptionModuleResult : public GarbageCollectedFinalized<ContentDecryptionModuleResult> {
 public:
     virtual ~ContentDecryptionModuleResult() { }
 
     virtual void complete() = 0;
     virtual void completeWithSession(blink::WebContentDecryptionModuleResult::SessionStatus) = 0;
     virtual void completeWithError(blink::WebContentDecryptionModuleException, unsigned long systemCode, const blink::WebString&) = 0;
 
     blink::WebContentDecryptionModuleResult result()
     {
         return blink::WebContentDecryptionModuleResult(this);
     }
 
     virtual void trace(Visitor*) { }
 };
 
-} // namespace WebCore
+} // namespace blink
 
 #endif // ContentDecryptionModuleResult_h