gl_unittests: on a core profile, use VAOs

ui/gl/test/gl_image_test_template.h

Index: ui/gl/test/gl_image_test_template.h
diff --git a/ui/gl/test/gl_image_test_template.h b/ui/gl/test/gl_image_test_template.h
index 7203f0f63e72507ccb2d67b31f61e7b505b85249..f8122dc59a9fd62ac7f95e402f6c64a51777ca24 100644
--- a/ui/gl/test/gl_image_test_template.h
+++ b/ui/gl/test/gl_image_test_template.h
@@ -110,6 +110,12 @@ void DrawTextureQuad(GLenum target, const gfx::Size& size) {
   );
   // clang-format on
 
+  GLuint vao = 0;
+  if (GLHelper::ShouldTestsUseVAOs()) {
+    glGenVertexArraysOES(1, &vao);
+    glBindVertexArrayOES(vao);
+  }
+
   GLuint vertex_shader = GLHelper::LoadShader(GL_VERTEX_SHADER, kVertexShader);
   GLuint fragment_shader = LoadFragmentShader(target, size);
   GLuint program = GLHelper::SetupProgram(vertex_shader, fragment_shader);
@@ -123,6 +129,10 @@ void DrawTextureQuad(GLenum target, const gfx::Size& size) {
   GLuint vertex_buffer = GLHelper::SetupQuadVertexBuffer();
   GLHelper::DrawQuad(vertex_buffer);
 
+  if (vao != 0) {
+    glDeleteVertexArraysOES(1, &vao);
+  }
+
   glDeleteShader(vertex_shader);
   glDeleteShader(fragment_shader);
   glDeleteProgram(program);