Cleanup namespace usage in Source/web/*.h

Source/web/IndexedDBClientImpl.h

 /*
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 14 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef IndexedDBClientImpl_h
 #define IndexedDBClientImpl_h
 
 #include "modules/indexeddb/IndexedDBClient.h"
 
 namespace blink {
+
 class ExecutionContext;
-}
 
-namespace blink {
+class IndexedDBClientImpl FINAL : public IndexedDBClient {
+public:
+    static IndexedDBClient* create();
 
-class IndexedDBClientImpl FINAL : public blink::IndexedDBClient {
-public:
-    static blink::IndexedDBClient* create();
-
-    virtual bool allowIndexedDB(blink::ExecutionContext*, const String& name) OVERRIDE;
+    virtual bool allowIndexedDB(ExecutionContext*, const String& name) OVERRIDE;
 
 private:
     IndexedDBClientImpl() { }
 };
 
 } // namespace blink
 
 #endif // IndexedDBClientImpl_h