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

public/web/mac/WebSubstringUtil.h

Index: public/web/mac/WebSubstringUtil.h
diff --git a/public/web/mac/WebSubstringUtil.h b/public/web/mac/WebSubstringUtil.h
index 730036d74811bda40da2e1f0e95f83206d1e0794..72fc464c9e14f31e5a4c8c09a7c116c68b99955b 100644
--- a/public/web/mac/WebSubstringUtil.h
+++ b/public/web/mac/WebSubstringUtil.h
@@ -34,11 +34,6 @@
 #include "../../platform/WebCommon.h"
 #include "public/web/WebFrame.h"
 
-namespace blink {
-class WebView;
-struct WebPoint;
-}
-
 #if __OBJC__
 @class NSAttributedString;
 #else
@@ -47,6 +42,9 @@ class NSAttributedString;
 
 namespace blink {
 
+class WebView;
+struct WebPoint;
+
 class WebSubstringUtil {
 public:
     // Returns an autoreleased NSAttributedString that is the word under