Cleanup namespace usage in public/web/Web[N-Z]*.h.

public/web/WebSelectElement.h

Index: public/web/WebSelectElement.h
diff --git a/public/web/WebSelectElement.h b/public/web/WebSelectElement.h
index 05651d1cf74b3de30b1aa3c49cf1ea002b003fc8..c60c80208456e76347cf94f18c128ef8b3b6a3c9 100644
--- a/public/web/WebSelectElement.h
+++ b/public/web/WebSelectElement.h
@@ -35,12 +35,10 @@
 #include "WebFormControlElement.h"
 #include "WebOptionElement.h"
 
-#if BLINK_IMPLEMENTATION
-namespace blink { class HTMLSelectElement; }
-#endif
-
 namespace blink {
 
+class HTMLSelectElement;
+
 // Provides readonly access to some properties of a DOM select element node.
 class WebSelectElement : public WebFormControlElement {
 public:
@@ -57,9 +55,9 @@ public:
     BLINK_EXPORT WebVector<WebElement> listItems() const;
 
 #if BLINK_IMPLEMENTATION
-    WebSelectElement(const PassRefPtrWillBeRawPtr<blink::HTMLSelectElement>&);
-    WebSelectElement& operator=(const PassRefPtrWillBeRawPtr<blink::HTMLSelectElement>&);
-    operator PassRefPtrWillBeRawPtr<blink::HTMLSelectElement>() const;
+    WebSelectElement(const PassRefPtrWillBeRawPtr<HTMLSelectElement>&);
+    WebSelectElement& operator=(const PassRefPtrWillBeRawPtr<HTMLSelectElement>&);
+    operator PassRefPtrWillBeRawPtr<HTMLSelectElement>() const;
 #endif
 };