[VR GL tests] Leave GL implementation undefined

The default implementation supports the GL tests to run on MSan successfully.

Bug: 889186
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:linux_vr;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I6d0f7bef6ddba8a2b508d1fd0c732dac1fb31205
Reviewed-on: https://chromium-review.googlesource.com/1246292Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Commit-Queue: Aldo Culquicondor <acondor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594411}

chrome/browser/vr/test/gl_test_environment_unittest.cc

@@ -9,13 +9,7 @@
 
 namespace vr {
 
-#if defined(MEMORY_SANITIZER)
-#define MAYBE_InitializeAndCleanup DISABLED_InitializeAndCleanup
-#else
-#define MAYBE_InitializeAndCleanup InitializeAndCleanup
-#endif
-
-TEST(GlTestEnvironmentTest, MAYBE_InitializeAndCleanup) {
+TEST(GlTestEnvironmentTest, InitializeAndCleanup) {
   GlTestEnvironment gl_test_environment(gfx::Size(100, 100));
   EXPECT_NE(gl_test_environment.GetFrameBufferForTesting(), 0u);
   EXPECT_EQ(glGetError(), (GLenum)GL_NO_ERROR);

chrome/browser/vr/test/vr_gl_test_suite.cc

@@ -22,7 +22,7 @@ VrGlTestSuite::VrGlTestSuite(int argc, char** argv) : VrTestSuite(argc, argv) {}
 void VrGlTestSuite::Initialize() {
   VrTestSuite::Initialize();
 
-  gl::GLImageTestSupport::InitializeGL(gl::kGLImplementationEGLGLES2);
+  gl::GLImageTestSupport::InitializeGL(base::nullopt);
 
 #if defined(VR_USE_COMMAND_BUFFER)
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();

chrome/browser/vr/ui_pixeltest.cc

@@ -18,13 +18,7 @@ constexpr gfx::Transform kIdentity;
 
 }  // namespace
 
-#if defined(MEMORY_SANITIZER)
-#define MAYBE_DrawVrBrowsingMode DISABLED_DrawVrBrowsingMode
-#else
-#define MAYBE_DrawVrBrowsingMode DrawVrBrowsingMode
-#endif
-
-TEST_F(UiPixelTest, MAYBE_DrawVrBrowsingMode) {
+TEST_F(UiPixelTest, DrawVrBrowsingMode) {
   // Set up scene.
   UiInitialState ui_initial_state;
   ui_initial_state.in_web_vr = false;