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 ed621042bd9366818819d434b39bf548a2a4f87e..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"
@@ -30,9 +29,6 @@
 Display::Display(EGLNativeDisplayType display_id)
     : display_id_(display_id),
       is_initialized_(false),
-#if !defined(GLES2_CONFORM_SUPPORT_ONLY)
-      exit_manager_(new base::AtExitManager),
-#endif
       create_offscreen_(false),
       create_offscreen_width_(0),
       create_offscreen_height_(0) {