Revert impeller render texture code for gles (#140)

Author: xiaowei-guan

flutter/shell/platform/embedder/embedder.h

@@ -405,7 +405,6 @@ typedef struct {
 } FlutterTransformation;
 
 typedef void (*VoidCallback)(void* /* user data */);
-typedef bool (*BoolCallback)(void* /* user data */);
 
 typedef enum {
   /// Specifies an OpenGL texture target type. Textures are specified using
@@ -513,13 +512,6 @@ typedef struct {
   uint32_t name;
   /// The texture format (example GL_RGBA8).
   uint32_t format;
-  /// The pixel data buffer.
-  const uint8_t* buffer;
-  /// The size of pixel buffer.
-  size_t buffer_size;
-  /// Callback invoked that the gpu surface texture start binding.
-  BoolCallback bind_callback;
-
   /// User data to be returned on the invocation of the destruction callback.
   void* user_data;
   /// Callback invoked (on an engine managed thread) that asks the embedder to
@@ -613,6 +605,7 @@ typedef struct {
   uint32_t format;
 } FlutterOpenGLSurface;
 
+typedef bool (*BoolCallback)(void* /* user data */);
 typedef FlutterTransformation (*TransformationCallback)(void* /* user data */);
 typedef uint32_t (*UIntCallback)(void* /* user data */);
 typedef bool (*SoftwareSurfacePresentCallback)(void* /* user data */,

flutter/shell/platform/tizen/BUILD.gn

@@ -81,9 +81,7 @@ template("embedder") {
       "channels/text_input_channel.cc",
       "channels/window_channel.cc",
       "external_texture_pixel_egl.cc",
-      "external_texture_pixel_egl_impeller.cc",
       "external_texture_surface_egl.cc",
-      "external_texture_surface_egl_impeller.cc",
       "flutter_platform_node_delegate_tizen.cc",
       "flutter_project_bundle.cc",
       "flutter_tizen.cc",

flutter/shell/platform/tizen/external_texture_pixel_egl_impeller.cc

@@ -7,10 +7,8 @@
 #include <iostream>
 #include <mutex>
 
-#include "flutter/shell/platform/tizen/external_texture_pixel_egl.h"
-#include "flutter/shell/platform/tizen/external_texture_pixel_egl_impeller.h"
+#include "flutter/shell/platform/tizen/external_texture.h"
 #include "flutter/shell/platform/tizen/external_texture_surface_egl.h"
-#include "flutter/shell/platform/tizen/external_texture_surface_egl_impeller.h"
 #include "flutter/shell/platform/tizen/flutter_tizen_engine.h"
 #include "flutter/shell/platform/tizen/logger.h"