Clear IOSurfaces immediately after creating them.

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 151 matching lines @@
 // GLImage in order to be conformant.
 REGISTER_TYPED_TEST_CASE_P(GLImageTest, CreateAndDestroy);
 
 template <typename GLImageTestDelegate>
 class GLImageZeroInitializeTest : public GLImageTest<GLImageTestDelegate> {};
 
 // This test verifies that if an uninitialized image is bound to a texture, the
 // result is zero-initialized.
 TYPED_TEST_CASE_P(GLImageZeroInitializeTest);
 
-// TODO(erikchen): Enable this test when it actually passes on Mac.
-// https://crbug.com/584760.
-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();
   GLuint uninitialized_texture = GLTestHelper::CreateTexture(target);
 
   glBindTexture(target, uninitialized_texture);
   ASSERT_TRUE(image->BindTexImage(target));
   GLuint framebuffer =
       GLTestHelper::SetupFramebuffer(image_size.width(), image_size.height());
   ASSERT_TRUE(framebuffer);
@@ skipping 13 matching lines @@
   glDeleteShader(pas.vertex_shader);
   glDeleteShader(pas.fragment_shader);
   glDeleteBuffersARB(1, &vertex_buffer);
   glDeleteFramebuffersEXT(1, &framebuffer);
 
   image->ReleaseTexImage(target);
   image->Destroy(true);
   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> {};
 
 TYPED_TEST_CASE_P(GLImageCopyTest);
 
 TYPED_TEST_P(GLImageCopyTest, CopyTexImage) {
   const gfx::Size image_size(256, 256);
   // These values are picked so that RGB -> YUV on the CPU converted
   // back to RGB on the GPU produces the original RGB values without
@@ skipping 52 matching lines @@
   image->Destroy(true);
 }
 
 // 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_