Refactor DrawTextureQuad and CheckPixels in gl_tests util

gpu/command_buffer/tests/gl_lose_context_chromium_unittest.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 <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 37 matching lines @@
 
   gl1a_.MakeCurrent();
   glLoseContextCHROMIUM(
       GL_GUILTY_CONTEXT_RESET_EXT, GL_INNOCENT_CONTEXT_RESET_EXT);
 
   uint8_t expected_no_draw[] = {
       GLTestHelper::kCheckClearValue, GLTestHelper::kCheckClearValue,
       GLTestHelper::kCheckClearValue, GLTestHelper::kCheckClearValue,
   };
   // Expect the read will fail.
-  EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_no_draw));
+  EXPECT_TRUE(
+      GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_no_draw, nullptr));
   gl1b_.MakeCurrent();
   // Expect the read will fail.
-  EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_no_draw));
+  EXPECT_TRUE(
+      GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_no_draw, nullptr));
   gl2_.MakeCurrent();
   uint8_t expected_draw[] = {
       0, 0, 0, 0,
   };
   // Expect the read will succeed.
-  EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_draw));
+  EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_draw, nullptr));
 }
 
 }  // namespace gpu