Add Pepper support for several GL extensions

ppapi/thunk/ppb_gles_chromium_texture_mapping_thunk.cc

-// Copyright (c) 2012 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 "ppapi/thunk/thunk.h"
-#include "ppapi/thunk/enter.h"
-#include "ppapi/thunk/ppb_graphics_3d_api.h"
-#include "ppapi/thunk/resource_creation_api.h"
-
-namespace ppapi {
-namespace thunk {
-
-namespace {
-
-typedef EnterResource<PPB_Graphics3D_API> EnterGraphics3D;
-
-void* MapTexSubImage2DCHROMIUM(PP_Resource context,
-                               GLenum target,
-                               GLint level,
-                               GLint xoffset,
-                               GLint yoffset,
-                               GLsizei width,
-                               GLsizei height,
-                               GLenum format,
-                               GLenum type,
-                               GLenum access) {
-  EnterGraphics3D enter(context, true);
-  if (enter.succeeded()) {
-    return enter.object()->MapTexSubImage2DCHROMIUM(
-        target, level, xoffset, yoffset, width, height, format, type, access);
-  }
-  return NULL;
-}
-
-void UnmapTexSubImage2DCHROMIUM(PP_Resource context, const void* mem) {
-  EnterGraphics3D enter(context, true);
-  if (enter.succeeded())
-    enter.object()->UnmapTexSubImage2DCHROMIUM(mem);
-}
-
-const PPB_GLESChromiumTextureMapping_Dev
-g_ppb_gles_chromium_texture_mapping_thunk = {
-  &MapTexSubImage2DCHROMIUM,
-  &UnmapTexSubImage2DCHROMIUM
-};
-
-}  // namespace
-
-const PPB_GLESChromiumTextureMapping_Dev_0_1*
-GetPPB_GLESChromiumTextureMapping_Dev_0_1_Thunk() {
-  return &g_ppb_gles_chromium_texture_mapping_thunk;
-}
-
-}  // namespace thunk
-}  // namespace ppapi