Revert of mojo: Convert gles2 to the new thunking system

mojo/public/platform/native/gles2_thunks.h

-// Copyright 2014 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.
-
-#ifndef MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_
-#define MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_
-
-#include <stddef.h>
-
-#include "mojo/public/c/gles2/gles2.h"
-
-// Structure used to bind the interface which manipulates GLES2 surfaces to a
-// DSO to theose of the embedder.
-//
-// This is the ABI between the embedder and the DSO. It can only have new
-// functions added to the end. No other changes are supported.
-#pragma pack(push, 8)
-struct MojoGLES2ControlThunks {
-  size_t size;  // Should be set to sizeof(MojoGLES2ControlThunks).
-
-  void (*GLES2Initialize)(const MojoAsyncWaiter* async_waiter);
-  void (*GLES2Terminate)();
-  MojoGLES2Context (*GLES2CreateContext)(
-      MojoHandle handle,
-      MojoGLES2ContextLost lost_callback,
-      void* closure);
-  void (*GLES2DestroyContext)(MojoGLES2Context context);
-  void (*GLES2MakeCurrent)(MojoGLES2Context context);
-  void (*GLES2SwapBuffers)();
-
-  // TODO(piman): We shouldn't have to leak these 2 interfaces, especially in a
-  // type-unsafe way.
-  void* (*GLES2GetGLES2Interface)(MojoGLES2Context context);
-  void* (*GLES2GetContextSupport)(MojoGLES2Context context);
-};
-#pragma pack(pop)
-
-// Intended to be called from the embedder. Returns an object initialized to
-// contain pointers to each of the embedder's MojoGLES2ControlThunks functions.
-inline MojoGLES2ControlThunks MojoMakeGLES2ControlThunks() {
-  MojoGLES2ControlThunks gles2_control_thunks = {
-    sizeof(MojoGLES2ControlThunks),
-    MojoGLES2Initialize,
-    MojoGLES2Terminate,
-    MojoGLES2CreateContext,
-    MojoGLES2DestroyContext,
-    MojoGLES2MakeCurrent,
-    MojoGLES2SwapBuffers,
-    MojoGLES2GetGLES2Interface,
-    MojoGLES2GetContextSupport
-  };
-
-  return gles2_control_thunks;
-}
-
-// Use this type for the function found by dynamically discovering it in
-// a DSO linked with mojo_system. For example:
-// MojoSetGLES2ControlThunksFn mojo_set_gles2_control_thunks_fn =
-//     reinterpret_cast<MojoSetGLES2ControlThunksFn>(
-//         app_library.GetFunctionPointer("MojoSetGLES2ControlThunks"));
-// The expected size of |gles2_control_thunks| is returned.
-// The contents of |gles2_control_thunks| are copied.
-typedef size_t (*MojoSetGLES2ControlThunksFn)(
-    const MojoGLES2ControlThunks* gles2_control_thunks);
-
-// -----------------------------------------------------------------------------
-
-// Like MojoGLES2ControlThunks, but specifies the frozen GLES2 API. Separated
-// out as MojoGLES2ControlThunks may be modified and added to, but this
-// interface is frozen.
-#pragma pack(push, 8)
-struct MojoGLES2ImplThunks {
-  size_t size;  // Should be set to sizeof(MojoGLES2ImplThunks).
-
-#define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
-  ReturnType (*Function) PARAMETERS;
-#include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
-#undef VISIT_GL_CALL
-};
-#pragma pack(pop)
-
-// Intended to be called from the embedder to get the embedder's implementation
-// of GLES2.
-inline MojoGLES2ImplThunks MojoMakeGLES2ImplThunks() {
-  MojoGLES2ImplThunks gles2_impl_thunks = {
-    sizeof(MojoGLES2ImplThunks),
-#define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
-    gl##Function,
-#include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
-#undef VISIT_GL_CALL
-  };
-
-  return gles2_impl_thunks;
-}
-
-// Use this type for the function found by dynamically discovering it in
-// a DSO linked with mojo_system. For example:
-// MojoSetGLES2ImplThunksFn mojo_set_gles2_impl_thunks_fn =
-//     reinterpret_cast<MojoSetGLES2ImplThunksFn>(
-//         app_library.GetFunctionPointer("MojoSetGLES2ImplThunks"));
-// The expected size of |gles2_impl_thunks| is returned.
-// The contents of |gles2_impl_thunks| are copied.
-typedef size_t (*MojoSetGLES2ImplThunksFn)(
-    const MojoGLES2ImplThunks* gles2_impl_thunks);
-
-#endif  // MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_