Revert of Add command_buffer_gles2

gpu/gles2_conform_support/egl/display.cc

Index: gpu/gles2_conform_support/egl/display.cc
diff --git a/gpu/gles2_conform_support/egl/display.cc b/gpu/gles2_conform_support/egl/display.cc
index 2528cdcba5cee0b139e15a40df0b235b72498126..18f474211e20b7a345f60d4c5cffda137501bc0b 100644
--- a/gpu/gles2_conform_support/egl/display.cc
+++ b/gpu/gles2_conform_support/egl/display.cc
@@ -5,7 +5,6 @@
 #include "gpu/gles2_conform_support/egl/display.h"
 
 #include <vector>
-#include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
@@ -32,8 +31,8 @@
       is_initialized_(false),
       create_offscreen_(false),
       create_offscreen_width_(0),
-      create_offscreen_height_(0),
-      exit_manager_(new base::AtExitManager) {}
+      create_offscreen_height_(0) {
+}
 
 Display::~Display() {
   gles2::Terminate();