Cleanup namespace usage in Source/web/*.h

Source/web/WebFileChooserCompletionImpl.h

Index: Source/web/WebFileChooserCompletionImpl.h
diff --git a/Source/web/WebFileChooserCompletionImpl.h b/Source/web/WebFileChooserCompletionImpl.h
index c1bb91dc3c1c98174e91f7eb6d4e3a342778f594..4aa35d8331f505afee2c36f17b17342c1465857d 100644
--- a/Source/web/WebFileChooserCompletionImpl.h
+++ b/Source/web/WebFileChooserCompletionImpl.h
@@ -37,10 +37,6 @@
 #include "public/web/WebFileChooserCompletion.h"
 #include "wtf/PassRefPtr.h"
 
-using blink::WebFileChooserCompletion;
-using blink::WebString;
-using blink::WebVector;
-
 namespace blink {
 
 class WebFileChooserCompletionImpl FINAL : public WebFileChooserCompletion {
@@ -49,6 +45,7 @@ public:
     virtual ~WebFileChooserCompletionImpl();
     virtual void didChooseFile(const WebVector<WebString>& fileNames) OVERRIDE;
     virtual void didChooseFile(const WebVector<SelectedFileInfo>& files) OVERRIDE;
+
 private:
     RefPtr<FileChooser> m_fileChooser;
 };