Revert of command_buffer_gles2: Implement EGL default Display as a global object

gpu/gles2_conform_support/egl/surface.cc

 // Copyright (c) 2011 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 "gpu/gles2_conform_support/egl/surface.h"
-#include "ui/gl/gl_surface.h"
 
 namespace egl {
 
-Surface::Surface(gfx::GLSurface* gl_surface)
-    : is_current_in_some_thread_(false), gl_surface_(gl_surface) {}
+Surface::Surface(EGLNativeWindowType win) : window_(win) {
+}
 
 Surface::~Surface() {
 }
 
-gfx::GLSurface* Surface::gl_surface() const {
-  return gl_surface_.get();
-}
-
-bool Surface::ValidatePbufferAttributeList(const EGLint* attrib_list) {
-  if (attrib_list) {
-    for (int i = 0; attrib_list[i] != EGL_NONE; i += 2) {
-      switch (attrib_list[i]) {
-        case EGL_WIDTH:
-        case EGL_HEIGHT:
-          break;
-        default:
-          return false;
-      }
-    }
-  }
-  return true;
-}
-
-bool Surface::ValidateWindowAttributeList(const EGLint* attrib_list) {
-  if (attrib_list) {
-    if (attrib_list[0] != EGL_NONE)
-      return false;
-  }
-  return true;
-}
 }  // namespace egl