Ensure GL initialization only happens once, and provide common init path

content/common/gpu/client/gl_helper_unittest.cc

 // Copyright 2014 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.
 
 #include <stdio.h>
 #include <cmath>
 #include <string>
 #include <vector>
 
 #include <GLES2/gl2.h>
@@ skipping 1523 matching lines @@
 // need to set it up before we can run the tests.
 int main(int argc, char** argv) {
   CommandLine::Init(argc, argv);
   base::TestSuite* suite = new content::ContentTestSuite(argc, argv);
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool pool;
 #endif
 #if defined(TOOLKIT_GTK)
   gfx::GtkInitFromCommandLine(*CommandLine::ForCurrentProcess());
 #endif
-  gfx::GLSurface::InitializeOneOff();
   gpu::ApplyGpuDriverBugWorkarounds(CommandLine::ForCurrentProcess());
 
   content::UnitTestTestSuite runner(suite);
   base::MessageLoop message_loop;
   return runner.Run();
 }