Convert most remaining resources to use the API/thunk system. The significant

ppapi/thunk/ppb_gles_chromium_texture_mapping_thunk.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 "ppapi/thunk/thunk.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_context_3d_api.h"
+#include "ppapi/thunk/resource_creation_api.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+typedef EnterResource<PPB_Context3D_API> EnterContext3D;
+
+void* MapTexSubImage2DCHROMIUM(PP_Resource context,
+                               GLenum target,
+                               GLint level,
+                               GLint xoffset,
+                               GLint yoffset,
+                               GLsizei width,
+                               GLsizei height,
+                               GLenum format,
+                               GLenum type,
+                               GLenum access) {
+  EnterContext3D enter(context, true);
+  if (enter.failed())
+    return NULL;
+  return enter.object()->MapTexSubImage2DCHROMIUM(
+      target, level, xoffset, yoffset, width, height, format, type, access);
+}
+
+void UnmapTexSubImage2DCHROMIUM(PP_Resource context, const void* mem) {
+  EnterContext3D 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*
+GetPPB_GLESChromiumTextureMapping_Thunk() {
+  return &g_ppb_gles_chromium_texture_mapping_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi