Add OzoneGLImpl interface.

ui/ozone/common/gl_ozone_egl.cc

+// Copyright 2016 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 "ui/ozone/common/gl_ozone_egl.h"
+
+#include "ui/gl/gl_bindings.h"
+#include "ui/gl/gl_context.h"
+#include "ui/gl/gl_context_egl.h"
+#include "ui/gl/gl_egl_api_implementation.h"
+#include "ui/gl/gl_gl_api_implementation.h"
+#include "ui/gl/gl_share_group.h"
+#include "ui/gl/gl_surface.h"
+#include "ui/gl/gl_surface_egl.h"
+
+namespace ui {
+
+bool GLOzoneEGL::InitializeGLOneOffPlatform() {
+  if (!gl::GLSurfaceEGL::InitializeOneOff(GetNativeDisplay())) {
+    LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed.";
+    return false;
+  }
+  return true;
+}
+
+bool GLOzoneEGL::InitializeStaticGLBindings(
+    gl::GLImplementation implementation) {
+  if (!LoadGLES2Bindings())
+    return false;
+
+  gl::SetGLImplementation(gl::kGLImplementationEGLGLES2);
+  gl::InitializeStaticGLBindingsGL();
+  gl::InitializeStaticGLBindingsEGL();
+
+  return true;
+}
+
+void GLOzoneEGL::InitializeDebugGLBindings() {
+  gl::InitializeDebugGLBindingsGL();
+  gl::InitializeDebugGLBindingsEGL();
+}
+
+void GLOzoneEGL::ClearGLBindings() {
+  gl::ClearGLBindingsGL();
+  gl::ClearGLBindingsEGL();
+}
+
+bool GLOzoneEGL::GetGLWindowSystemBindingInfo(
+    gl::GLWindowSystemBindingInfo* info) {
+  return gl::GetGLWindowSystemBindingInfoEGL(info);
+}
+
+scoped_refptr<gl::GLContext> GLOzoneEGL::CreateGLContext(
+    gl::GLShareGroup* share_group,
+    gl::GLSurface* compatible_surface,
+    gl::GpuPreference gpu_preference) {
+  return gl::InitializeGLContext(new gl::GLContextEGL(share_group),
+                                 compatible_surface, gpu_preference);
+}
+
+scoped_refptr<gl::GLSurface> GLOzoneEGL::CreateSurfacelessViewGLSurface(
+    gfx::AcceleratedWidget window) {
+  // This will usually not be implemented by the platform specific version.
+  return nullptr;
+}
+
+}  // namespace ui