Prevent crash when using getExtension while a PBO is bound.

gpu/command_buffer/service/texture_manager_unittest.cc

Index: gpu/command_buffer/service/texture_manager_unittest.cc
diff --git a/gpu/command_buffer/service/texture_manager_unittest.cc b/gpu/command_buffer/service/texture_manager_unittest.cc
index 857db18bb57709a68607fcfef8046cb2c06f4255..b7445f8d5289be72c65a93f938490bdbfc67dd46 100644
--- a/gpu/command_buffer/service/texture_manager_unittest.cc
+++ b/gpu/command_buffer/service/texture_manager_unittest.cc
@@ -112,7 +112,8 @@ class TextureManagerTest : public GpuServiceTest {
                         const char* gl_version,
                         bool enable_es3) {
     TestHelper::SetupFeatureInfoInitExpectationsWithGLVersion(
-        gl_.get(), gl_extensions, "", gl_version, enable_es3);
+        gl_.get(), gl_extensions, "", gl_version,
+        feature_info_->context_type(), enable_es3);
     feature_info_->InitializeForTesting();
     if (enable_es3) {
       EXPECT_CALL(*gl_, GetIntegerv(GL_MAX_COLOR_ATTACHMENTS, _))