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

public/web/WebFormControlElement.h

Index: public/web/WebFormControlElement.h
diff --git a/public/web/WebFormControlElement.h b/public/web/WebFormControlElement.h
index 0026b27e19e4877520a79ff1b656304c44d157bf..63de5630a70f3c6cae64abfc5f007cd7d4fef76c 100644
--- a/public/web/WebFormControlElement.h
+++ b/public/web/WebFormControlElement.h
@@ -35,12 +35,10 @@
 #include "WebElement.h"
 #include "WebFormElement.h"
 
-#if BLINK_IMPLEMENTATION
-namespace blink { class HTMLFormControlElement; }
-#endif
-
 namespace blink {
 
+class HTMLFormControlElement;
+
 // Provides readonly access to some properties of a DOM form control element node.
 class WebFormControlElement : public WebElement {
 public:
@@ -116,9 +114,9 @@ public:
     BLINK_EXPORT WebFormElement form() const;
 
 #if BLINK_IMPLEMENTATION
-    WebFormControlElement(const PassRefPtrWillBeRawPtr<blink::HTMLFormControlElement>&);
-    WebFormControlElement& operator=(const PassRefPtrWillBeRawPtr<blink::HTMLFormControlElement>&);
-    operator PassRefPtrWillBeRawPtr<blink::HTMLFormControlElement>() const;
+    WebFormControlElement(const PassRefPtrWillBeRawPtr<HTMLFormControlElement>&);
+    WebFormControlElement& operator=(const PassRefPtrWillBeRawPtr<HTMLFormControlElement>&);
+    operator PassRefPtrWillBeRawPtr<HTMLFormControlElement>() const;
 #endif
 };