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

public/platform/WebCursorInfo.h

Index: public/platform/WebCursorInfo.h
diff --git a/public/platform/WebCursorInfo.h b/public/platform/WebCursorInfo.h
index 6c23756be812779e1471b91572b3dc34c400bcae..ef9cc177a3ed6f3132bcc033ee2a53f07f1c16e8 100644
--- a/public/platform/WebCursorInfo.h
+++ b/public/platform/WebCursorInfo.h
@@ -34,10 +34,6 @@
 #include "WebImage.h"
 #include "WebPoint.h"
 
-#if INSIDE_BLINK
-namespace blink { class Cursor; }
-#endif
-
 #ifdef WIN32
 typedef struct HICON__* HICON;
 typedef HICON HCURSOR;
@@ -45,6 +41,8 @@ typedef HICON HCURSOR;
 
 namespace blink {
 
+class Cursor;
+
 struct WebCursorInfo {
     enum Type {
         TypePointer,
@@ -116,7 +114,7 @@ struct WebCursorInfo {
     }
 
 #if INSIDE_BLINK
-    BLINK_PLATFORM_EXPORT explicit WebCursorInfo(const blink::Cursor&);
+    BLINK_PLATFORM_EXPORT explicit WebCursorInfo(const Cursor&);
 #endif
 };