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

public/platform/WebPoint.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 40 matching lines @@
     {
     }
 
     WebPoint(int x, int y)
         : x(x)
         , y(y)
     {
     }
 
 #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)
         : x(p.x())
         , y(p.y())
     {
     }
 
     WebPoint& operator=(const gfx::Point& p)
     {
@@ skipping 15 matching lines @@
 }
 
 inline bool operator!=(const WebPoint& a, const WebPoint& b)
 {
     return !(a == b);
 }
 
 } // namespace blink
 
 #endif