egl/x11: Created a child window to control resizes and prevent flashes

ui/gl/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
@@ skipping 156 matching lines @@
       "gl_context_glx.cc",
       "gl_context_glx.h",
       "gl_context_x11.cc",
       "gl_egl_api_implementation.cc",
       "gl_egl_api_implementation.h",
       "gl_glx_api_implementation.cc",
       "gl_glx_api_implementation.h",
       "gl_image_glx.cc",
       "gl_image_glx.h",
       "gl_implementation_x11.cc",
+      "gl_surface_egl_x11.cc",
+      "gl_surface_egl_x11.h",
       "gl_surface_glx.cc",
       "gl_surface_glx.h",
       "gl_surface_x11.cc",
     ]
 
     configs += [
       "//build/config/linux:x11",
       "//build/config/linux:xcomposite",
       "//build/config/linux:xext",
     ]
@@ skipping 194 matching lines @@
     sources = [
       "../android/java/src/org/chromium/ui/gl/SurfaceTextureListener.java",
       "../android/java/src/org/chromium/ui/gl/SurfaceTexturePlatformWrapper.java",
     ]
     public_deps = [
       ":surface_jni_headers",
     ]
     jni_package = "ui/gl"
   }
 }