Added SurfaceTextureGLOwner to create / own GL objects.

media/gpu/surface_texture_gl_owner.cc

+// Copyright 2017 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 "media/gpu/surface_texture_gl_owner.h"
+
+#include "base/logging.h"
+#include "ui/gl/scoped_make_current.h"
+
+namespace media {
+
+scoped_refptr<SurfaceTextureGLOwner> SurfaceTextureGLOwner::Create() {
+  GLuint texture_id;
+  glGenTextures(1, &texture_id);
+  if (!texture_id)
+    return nullptr;
+
+  return new SurfaceTextureGLOwner(texture_id);
+}
+
+SurfaceTextureGLOwner::SurfaceTextureGLOwner(GLuint texture_id)
+    : SurfaceTexture(CreateJavaSurfaceTexture(texture_id)),
+      context_(gl::GLContext::GetCurrent()),
+      surface_(gl::GLSurface::GetCurrent()),
+      texture_id_(texture_id) {
+  DCHECK(context_);
+  DCHECK(surface_);
+}
+
+SurfaceTextureGLOwner::~SurfaceTextureGLOwner() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  // Make sure that the SurfaceTexture isn't using the GL objects.
+  DestroyJavaObject();
+
+  ui::ScopedMakeCurrent scoped_make_current(context_.get(), surface_.get());
+  if (scoped_make_current.Succeeded()) {
+    glDeleteTextures(1, &texture_id_);
+    DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
+  }
+}
+
+void SurfaceTextureGLOwner::AttachToGLContext() {
+  NOTIMPLEMENTED();
+}
+
+void SurfaceTextureGLOwner::DetachFromGLContext() {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace media