Refactor DrawTextureQuad and CheckPixels in gl_tests util

gpu/command_buffer/tests/gl_chromium_framebuffer_multisample_unittest.cc

 // Copyright (c) 2012 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 <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 #include <stdint.h>
 
 #include "gpu/command_buffer/tests/gl_manager.h"
@@ skipping 82 matching lines @@
                             GL_COLOR_ATTACHMENT0,
                             GL_RENDERBUFFER,
                             sample_rb);
   EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE),
             glCheckFramebufferStatus(GL_FRAMEBUFFER));
 
   // Create another FBO to resolve the multisample buffer into.
   GLuint resolve_fbo, resolve_tex;
   glGenTextures(1, &resolve_tex);
   glBindTexture(GL_TEXTURE_2D, resolve_tex);
-  glTexImage2D(GL_TEXTURE_2D,
-               0,
-               GL_RGBA,
-               width,
-               height,
-               0,
-               GL_RGBA,
-               GL_UNSIGNED_BYTE,
-               NULL);
+  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA,
+               GL_UNSIGNED_BYTE, nullptr);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
   glGenFramebuffers(1, &resolve_fbo);
   glBindFramebuffer(GL_FRAMEBUFFER, resolve_fbo);
   glFramebufferTexture2D(GL_FRAMEBUFFER,
                          GL_COLOR_ATTACHMENT0,
                          GL_TEXTURE_2D,
                          resolve_tex,
@@ skipping 21 matching lines @@
                             0,
                             width,
                             height,
                             GL_COLOR_BUFFER_BIT,
                             GL_NEAREST);
 
   // Verify.
   const uint8_t green[] = {0, 255, 0, 255};
   const uint8_t black[] = {0, 0, 0, 0};
   glBindFramebuffer(GL_READ_FRAMEBUFFER, resolve_fbo);
-  EXPECT_TRUE(
-      GLTestHelper::CheckPixels(width / 4, (3 * height) / 4, 1, 1, 0, green));
-  EXPECT_TRUE(GLTestHelper::CheckPixels(width - 1, 0, 1, 1, 0, black));
+  EXPECT_TRUE(GLTestHelper::CheckPixels(width / 4, (3 * height) / 4, 1, 1, 0,
+                                        green, nullptr));
+  EXPECT_TRUE(GLTestHelper::CheckPixels(width - 1, 0, 1, 1, 0, black, nullptr));
 }
 
 }  // namespace gpu