Implement WEBGL_shared_resources

Source/core/html/canvas/WebGLShareGroup.idl

Index: Source/core/html/canvas/WebGLShareGroup.idl
diff --git a/Source/core/page/PerformanceMark.idl b/Source/core/html/canvas/WebGLShareGroup.idl
similarity index 83%
copy from Source/core/page/PerformanceMark.idl
copy to Source/core/html/canvas/WebGLShareGroup.idl
index 6bae83efc1c142bad0227ebbc6505fc2d933e5c0..b171b63585c28bef36854a330dbda93c80dbfbb9 100644
--- a/Source/core/page/PerformanceMark.idl
+++ b/Source/core/html/canvas/WebGLShareGroup.idl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Intel Inc. All rights reserved.
+ * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -10,10 +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 INC. ``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 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
@@ -23,5 +23,5 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-interface PerformanceMark : PerformanceEntry {
+interface WebGLShareGroup {
 };