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

public/web/WebSurroundingText.h

Index: public/web/WebSurroundingText.h
diff --git a/public/web/WebSurroundingText.h b/public/web/WebSurroundingText.h
index fa894e3b0783f981b4088ee5b80d9082e29e3145..6e7c87770e362a8b709e3435f4608b6d68f3b540 100644
--- a/public/web/WebSurroundingText.h
+++ b/public/web/WebSurroundingText.h
@@ -31,11 +31,8 @@
 #include "WebRange.h"
 
 namespace blink {
-class SurroundingText;
-}
-
-namespace blink {
 
+class SurroundingText;
 class WebHitTestResult;
 class WebNode;
 class WebRange;
@@ -82,7 +79,7 @@ public:
     BLINK_EXPORT WebRange rangeFromContentOffsets(size_t startOffsetInContent, size_t endOffsetInContent);
 
 protected:
-    WebPrivateOwnPtr<blink::SurroundingText> m_private;
+    WebPrivateOwnPtr<SurroundingText> m_private;
 };
 
 } // namespace blink