Cleanup namespace usage in public/web/Web[A-M]*.h.

public/web/WebColorSuggestion.h

 /*
  * Copyright (C) 2013 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebColorSuggestion_h
 #define WebColorSuggestion_h
 
 #include "public/platform/WebColor.h"
 #include "public/platform/WebString.h"
 
 namespace blink {
+
 struct ColorSuggestion;
-}
-
-namespace blink {
 
 struct WebColorSuggestion {
     WebColor color;
     WebString label;
 
 #if BLINK_IMPLEMENTATION
-    WebColorSuggestion(const blink::ColorSuggestion&);
-    WebColorSuggestion& operator=(const blink::ColorSuggestion&);
+    WebColorSuggestion(const ColorSuggestion&);
+    WebColorSuggestion& operator=(const ColorSuggestion&);
 #endif
 };
 
 } // namespace blink
 
 #endif // WebColorSuggestion_h