Rename WebCore namespace to blink in Platform

Source/platform/mac/ThemeMac.mm

 /*
  * Copyright (C) 2008, 2010, 2011, 2012 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 71 matching lines @@
 - (NSString*)webCoreFamilyName
 {
     if ([[self familyName] hasPrefix:@"."])
         return [self fontName];
 
     return [self familyName];
 }
 
 @end
 
-namespace WebCore {
+namespace blink {
 
 enum {
     topMargin,
     rightMargin,
     bottomMargin,
     leftMargin
 };
 
 Theme* platformTheme()
 {
@@ skipping 616 matching lines @@
             break;
         case InnerSpinButtonPart:
             paintStepper(states, context, zoomedRect, zoomFactor, scrollView);
             break;
         default:
             break;
     }
 }
 
 }