gl_tests: Use zero size gl surface for offscreen rendering

gpu/command_buffer/common/unittest_main.cc

 // Copyright (c) 2012 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/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#if defined(USE_OZONE)
+#include "base/message_loop/message_loop.h"
+#include "ui/ozone/public/ozone_platform.h"
+#endif
+
 namespace {
 
 class NoAtExitBaseTestSuite : public base::TestSuite {
  public:
   NoAtExitBaseTestSuite(int argc, char** argv)
       : base::TestSuite(argc, argv, false) {
   }
 };
 
 int RunTestSuite(int argc, char** argv) {
   return NoAtExitBaseTestSuite(argc, argv).Run();
 }
 
 }  // namespace
 
 int main(int argc, char** argv) {
   // On Android, AtExitManager is created in
   // testing/android/native_test_wrapper.cc before main() is called.
   // The same thing is also done in base/test/test_suite.cc
 #if !defined(OS_ANDROID)
   base::AtExitManager exit_manager;
 #endif
   base::CommandLine::Init(argc, argv);
+#if defined(USE_OZONE)
+  base::MessageLoopForUI main_loop;
+  ui::OzonePlatform::InitializeForUI();
+  ui::OzonePlatform::InitializeForGPU();
+#endif
   testing::InitGoogleMock(&argc, argv);
   return base::LaunchUnitTests(argc,
                                argv,
                                base::Bind(&RunTestSuite, argc, argv));
 }