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

public/platform/WebPoint.h

Index: public/platform/WebPoint.h
diff --git a/public/platform/WebPoint.h b/public/platform/WebPoint.h
index 2fd381d6d53f1a605d7ad9b71b1594497d27e7ac..54983157053395674da7f30573547d460505b4f0 100644
--- a/public/platform/WebPoint.h
+++ b/public/platform/WebPoint.h
@@ -58,22 +58,22 @@ struct WebPoint {
     }
 
 #if INSIDE_BLINK
-    WebPoint(const blink::IntPoint& p)
+    WebPoint(const IntPoint& p)
         : x(p.x())
         , y(p.y())
     {
     }
 
-    WebPoint& operator=(const blink::IntPoint& p)
+    WebPoint& operator=(const IntPoint& p)
     {
         x = p.x();
         y = p.y();
         return *this;
     }
 
-    operator blink::IntPoint() const
+    operator IntPoint() const
     {
-        return blink::IntPoint(x, y);
+        return IntPoint(x, y);
     }
 #else
     WebPoint(const gfx::Point& p)