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

ui/keyboard/test/run_all_unittests.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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/path_service.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
+#include "ui/gl/gl_surface.h"
 
 namespace {
 
 class KeyboardTestSuite : public base::TestSuite {
  public:
   KeyboardTestSuite(int argc, char** argv) : base::TestSuite(argc, argv) {}
 
  protected:
   virtual void Initialize() OVERRIDE {
     base::TestSuite::Initialize();
+    gfx::GLSurface::InitializeOneOffForTests();
     ui::RegisterPathProvider();
 
     base::FilePath pak_dir;
     PathService::Get(base::DIR_MODULE, &pak_dir);
 
     base::FilePath pak_file;
     pak_file = pak_dir.Append(FILE_PATH_LITERAL("ui_test.pak"));
 
     ui::ResourceBundle::InitSharedInstanceWithPakPath(pak_file);
   }
@@ skipping 10 matching lines @@
 }  // namespace
 
 int main(int argc, char** argv) {
   KeyboardTestSuite test_suite(argc, argv);
 
   return base::LaunchUnitTests(
       argc,
       argv,
       base::Bind(&KeyboardTestSuite::Run, base::Unretained(&test_suite)));
 }