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

public/web/WebScopedWindowFocusAllowedIndicator.h

Index: public/web/WebScopedWindowFocusAllowedIndicator.h
diff --git a/public/web/WebScopedWindowFocusAllowedIndicator.h b/public/web/WebScopedWindowFocusAllowedIndicator.h
index f3cc4afcd2430ce0f88a2fe96a0632e0ca697a30..ccb80b156819327527d48e469e0fd5385c451209 100644
--- a/public/web/WebScopedWindowFocusAllowedIndicator.h
+++ b/public/web/WebScopedWindowFocusAllowedIndicator.h
@@ -34,10 +34,8 @@
 #include "public/platform/WebPrivateOwnPtr.h"
 
 namespace blink {
-class WindowFocusAllowedIndicator;
-}
 
-namespace blink {
+class WindowFocusAllowedIndicator;
 
 class WebScopedWindowFocusAllowedIndicator {
 public:
@@ -48,7 +46,7 @@ private:
     BLINK_EXPORT void initialize();
     BLINK_EXPORT void reset();
 
-    WebPrivateOwnPtr<blink::WindowFocusAllowedIndicator> m_indicator;
+    WebPrivateOwnPtr<WindowFocusAllowedIndicator> m_indicator;
 };
 
 }