Cleanup namespace usage in Source/web[A-V]*.cpp

Source/web/ContextFeaturesClientImpl.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #include "config.h"
 #include "web/ContextFeaturesClientImpl.h"
 
 #include "core/dom/Document.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/web/WebDocument.h"
 #include "public/web/WebPermissionClient.h"
 #include "web/WebLocalFrameImpl.h"
 
-using namespace blink;
-
 namespace blink {
 
 class ContextFeaturesCache FINAL : public NoBaseWillBeGarbageCollectedFinalized<ContextFeaturesCache>, public DocumentSupplement {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ContextFeaturesCache);
 public:
     class Entry {
     public:
         enum Value {
             IsEnabled,
             IsDisabled,
@@ skipping 95 matching lines @@
     case ContextFeatures::MutationEvents:
         return frame->permissionClient()->allowMutationEvents(defaultValue);
     case ContextFeatures::PushState:
         return frame->permissionClient()->allowPushState();
     default:
         return defaultValue;
     }
 }
 
 } // namespace blink