Clear IOSurfaces immediately after creating them.

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 09b451c5b3c9491ae1d308ebf418498c9476b465..e2f73ab6329b2e8e0f38592c6f025196ce32c2f5 100644
--- a/ui/gl/test/gl_image_test_template.h
+++ b/ui/gl/test/gl_image_test_template.h
@@ -171,7 +171,7 @@ TYPED_TEST_CASE_P(GLImageZeroInitializeTest);
 
 // TODO(erikchen): Enable this test when it actually passes on Mac.
 // https://crbug.com/584760.

[Avi (use Gerrit), 2016/02/17 23:07:25]

Drop the comment? It's no longer accurate.

[erikchen, 2016/02/17 23:55:30]

Done.

-TYPED_TEST_P(GLImageZeroInitializeTest, DISABLED_ZeroInitialize) {
+TYPED_TEST_P(GLImageZeroInitializeTest, ZeroInitialize) {
   const gfx::Size image_size(256, 256);
   scoped_refptr<gl::GLImage> image = this->delegate_.CreateImage(image_size);
   GLenum target = this->delegate_.GetTextureTarget();
@@ -205,7 +205,7 @@ TYPED_TEST_P(GLImageZeroInitializeTest, DISABLED_ZeroInitialize) {
   glDeleteTextures(1, &uninitialized_texture);
 }
 
-REGISTER_TYPED_TEST_CASE_P(GLImageZeroInitializeTest, DISABLED_ZeroInitialize);
+REGISTER_TYPED_TEST_CASE_P(GLImageZeroInitializeTest, ZeroInitialize);
 
 template <typename GLImageTestDelegate>
 class GLImageCopyTest : public GLImageTest<GLImageTestDelegate> {};