Rename WebCore namespace to blink in bindings and web

Source/bindings/modules/v8/custom/V8ServiceWorkerCustom.cpp

 // 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.
 
 #include "config.h"
 #include "bindings/modules/v8/V8ServiceWorker.h"
 
 #include "bindings/core/v8/PostMessage.h"
 #include "bindings/core/v8/V8Binding.h"
 
-namespace WebCore {
+namespace blink {
 
 // FIXME: This stub should be replaced by generated code.
 void V8ServiceWorker::postMessageMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     postMessageMethodCommon("ServiceWorker", V8ServiceWorker::toNative(info.Holder()), info);
 }
 
-} // namespace WebCore
+} // namespace blink