Add common GLFence::IsSupported() check

gpu/command_buffer/service/gpu_service_test.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 "gpu/command_buffer/service/gpu_service_test.h"
 
 #include "gpu/command_buffer/service/test_helper.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gl/gl_context_stub_with_extensions.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_mock.h"
 #include "ui/gl/gl_surface.h"
 
 namespace gpu {
 namespace gles2 {
 
 GpuServiceTest::GpuServiceTest() : ran_setup_(false), ran_teardown_(false) {
 }
 
 GpuServiceTest::~GpuServiceTest() {
   DCHECK(ran_teardown_);
 }
 
-void GpuServiceTest::SetUp() {
+void GpuServiceTest::SetUpWithGLVersion(const char* gl_version,
+                                        const char* gl_extensions) {
   testing::Test::SetUp();
 
   gfx::SetGLGetProcAddressProc(gfx::MockGLInterface::GetGLProcAddress);
   gfx::GLSurface::InitializeOneOffWithMockBindingsForTests();
   gl_.reset(new ::testing::StrictMock< ::gfx::MockGLInterface>());
   ::gfx::MockGLInterface::SetGLInterface(gl_.get());
 
   context_ = new gfx::GLContextStubWithExtensions;
-  context_->AddExtensionsString(NULL);
-  context_->SetGLVersionString("3.0");
+  context_->AddExtensionsString(gl_extensions);
+  context_->SetGLVersionString(gl_version);
   gfx::GLSurface::InitializeDynamicMockBindingsForTests(context_);
   ran_setup_ = true;
 }
 
+void GpuServiceTest::SetUp() {
+  SetUpWithGLVersion("2.0", NULL);
+}
+
 void GpuServiceTest::TearDown() {
   DCHECK(ran_setup_);
   ::gfx::MockGLInterface::SetGLInterface(NULL);
   gl_.reset();
   gfx::ClearGLBindings();
   ran_teardown_ = true;
 
   testing::Test::TearDown();
 }
 
 }  // namespace gles2
 }  // namespace gpu