Cleanup namespace usage in public/platform/{Web[P-W]*,linux/*}.h

public/platform/WebURL.h

Index: public/platform/WebURL.h
diff --git a/public/platform/WebURL.h b/public/platform/WebURL.h
index c2a8269653f1af39013d67e2216f3d6188fb82ed..07aa8fd24dad292c584b2c2ec6f75cc0a48d9dd5 100644
--- a/public/platform/WebURL.h
+++ b/public/platform/WebURL.h
@@ -35,14 +35,14 @@
 #include "WebString.h"
 #include <url/third_party/mozilla/url_parse.h>
 
-#if INSIDE_BLINK
-namespace blink { class KURL; }
-#else
+#if !INSIDE_BLINK
 #include <url/gurl.h>
 #endif
 
 namespace blink {
 
+class KURL;
+
 class WebURL {
 public:
     ~WebURL()
@@ -102,9 +102,9 @@ public:
     }
 
 #if INSIDE_BLINK
-    BLINK_PLATFORM_EXPORT WebURL(const blink::KURL&);
-    BLINK_PLATFORM_EXPORT WebURL& operator=(const blink::KURL&);
-    BLINK_PLATFORM_EXPORT operator blink::KURL() const;
+    BLINK_PLATFORM_EXPORT WebURL(const KURL&);
+    BLINK_PLATFORM_EXPORT WebURL& operator=(const KURL&);
+    BLINK_PLATFORM_EXPORT operator KURL() const;
 #else
     WebURL(const GURL& url)
         : m_string(WebString::fromUTF8(url.possibly_invalid_spec()))