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(EGLNativeWindowType win) : window_(win) {
-}
+Surface::Surface(gfx::GLSurface* gl_surface)
+    : is_current_in_some_thread_(false), gl_surface_(gl_surface) {}
 
 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