Implement WEBGL_shared_resources

Source/core/html/canvas/WebGLShareGroup.cpp

Index: Source/core/html/canvas/WebGLShareGroup.cpp
diff --git a/Source/core/platform/network/DNS.cpp b/Source/core/html/canvas/WebGLShareGroup.cpp
similarity index 68%
copy from Source/core/platform/network/DNS.cpp
copy to Source/core/html/canvas/WebGLShareGroup.cpp
index fe9c68373f801982a2c9b17e3c6aeaf4c7019cf0..27687bfd5a8fc63d5d3e716e5d3b3ec45a174527 100644
--- a/Source/core/platform/network/DNS.cpp
+++ b/Source/core/html/canvas/WebGLShareGroup.cpp
@@ -1,5 +1,4 @@
 /*
- * Copyright (C) 2008 Collin Jackson  <collinj@webkit.org>
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -11,10 +10,10 @@
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * THIS SOFTWARE IS PROVIDED BY GOOGLE, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
@@ -25,15 +24,30 @@
  */
 
 #include "config.h"
-#include "core/platform/network/DNS.h"
 
-#include "public/platform/Platform.h"
+#include "core/html/canvas/WebGLShareGroup.h"
+
+#include "core/html/canvas/WebGLContextGroup.h"
 
 namespace WebCore {
 
-void prefetchDNS(const String& hostname)
+WebGLShareGroup::WebGLShareGroup(PassRefPtr<WebGLContextGroup> group)
+    : m_contextGroup(group)
+{
+}
+
+WebGLShareGroup::~WebGLShareGroup()
+{
+}
+
+PassRefPtr<WebGLShareGroup> WebGLShareGroup::create(PassRefPtr<WebGLContextGroup> group)
+{
+    return adoptRef(new WebGLShareGroup(group));
+}
+
+PassRefPtr<WebGLContextGroup> WebGLShareGroup::contextGroup() const
 {
-    WebKit::Platform::current()->prefetchHostName(hostname);
+    return m_contextGroup;
 }
 
 } // namespace WebCore