Update Native Client Authors to be Chromium Authors for the code moved from the

ppapi/native_client/tests/ppapi_browser/ppb_graphics3d/ppapi_ppb_graphics3d.cc

-// Copyright (c) 2011 The Native Client Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Test cases for PPB_Graphics3D functions.
 // TODO(nfullagar): More comprehensive testing of the PPAPI interface.
 
 #include <string.h>
 
 #include <GLES2/gl2.h>
 
@@ skipping 136 matching lines @@
   RegisterTest("TestGraphics3DInterface", TestGraphics3DInterface);
   RegisterTest("TestOpenGLES2Interface", TestOpenGLES2Interface);
   RegisterTest("TestCreate", TestCreate);
   RegisterTest("TestIsGraphics3D", TestIsGraphics3D);
   RegisterTest("TestSwapBuffers", TestSwapBuffers);
 }
 
 void SetupPluginInterfaces() {
   // none
 }