gl_unittests: on a core profile, use VAOs

ui/gl/test/gl_image_test_template.h

 // 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.
 
 // This file defines tests that implementations of GLImage should pass in order
 // to be conformant.
 
 #ifndef UI_GL_TEST_GL_IMAGE_TEST_TEMPLATE_H_
 #define UI_GL_TEST_GL_IMAGE_TEST_TEMPLATE_H_
 
@@ skipping 92 matching lines @@
   const char kVertexShader[] = STRINGIZE(
     attribute vec2 a_position;
     varying vec2 v_texCoord;
     void main() {
       gl_Position = vec4(a_position.x, a_position.y, 0.0, 1.0);
       v_texCoord = (a_position + vec2(1.0, 1.0)) * 0.5;
     }
   );
   // 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);
   EXPECT_NE(program, 0u);
   glUseProgram(program);
 
   GLint sampler_location = glGetUniformLocation(program, "a_texture");
   ASSERT_NE(sampler_location, -1);
   glUniform1i(sampler_location, 0);
 
   GLuint vertex_buffer = GLHelper::SetupQuadVertexBuffer();
   GLHelper::DrawQuad(vertex_buffer);
 
+  if (vao != 0) {
+    glDeleteVertexArraysOES(1, &vao);
+  }
+
   glDeleteShader(vertex_shader);
   glDeleteShader(fragment_shader);
   glDeleteProgram(program);
   glDeleteBuffersARB(1, &vertex_buffer);
 }
 
 }  // namespace
 
 template <typename GLImageTestDelegate>
 class GLImageTest : public testing::Test {
@@ skipping 206 matching lines @@
   image->Destroy(true /* have_context */);
 }
 
 // The GLImageCopyTest test case verifies that the GLImage implementation
 // handles CopyTexImage correctly.
 REGISTER_TYPED_TEST_CASE_P(GLImageCopyTest, CopyTexImage);
 
 }  // namespace gl
 
 #endif  // UI_GL_TEST_GL_IMAGE_TEST_TEMPLATE_H_