content: implement unittests backend for Ozone GBM

ui/gl/test/run_all_unittests.cc

 // Copyright 2015 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/bind.h"
 #include "base/macros.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
 #include "build/build_config.h"
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
 #include "base/test/mock_chrome_application_mac.h"
 #endif
 #if defined(USE_OZONE)
 #include "base/message_loop/message_loop.h"
 #include "ui/ozone/public/client_native_pixmap_factory.h"
+#include "ui/ozone/public/ozone_gpu_test_helper.h"
 #endif
 
 namespace {
 
 class GlTestSuite : public base::TestSuite {
  public:
   GlTestSuite(int argc, char** argv) : base::TestSuite(argc, argv) {
   }
 
  protected:
   void Initialize() override {
     base::TestSuite::Initialize();
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
     mock_cr_app::RegisterMockCrApp();
 #endif
 #if defined(USE_OZONE)
     // On Ozone, the backend initializes the event system using a UI thread.
     message_loop_.reset(new base::MessageLoopForUI);
+    ozone_test_ = ui::OzoneInitializerForTest::Create();
     client_native_pixmap_factory_ = ui::ClientNativePixmapFactory::Create();
     ui::ClientNativePixmapFactory::SetInstance(
         client_native_pixmap_factory_.get());
 #endif
   }
 
   void Shutdown() override {
     base::TestSuite::Shutdown();
   }
 
  private:
 #if defined(USE_OZONE)
   std::unique_ptr<base::MessageLoop> message_loop_;
+  std::unique_ptr<ui::OzoneInitializerForTest> ozone_test_;
   std::unique_ptr<ui::ClientNativePixmapFactory> client_native_pixmap_factory_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(GlTestSuite);
 };
 
 }  // namespace
 
 int main(int argc, char** argv) {
   GlTestSuite test_suite(argc, argv);
 
   return base::LaunchUnitTests(
       argc,
       argv,
       base::Bind(&GlTestSuite::Run, base::Unretained(&test_suite)));
 }