Remove //gpu/{blink,ipc}, gyp files, DEPS files

gpu/command_buffer/command_buffer.gypi

-# Copyright (c) 2012 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.
-
-{
-  'target_defaults': {
-    'variables': {
-      'gles2_utils_target': 0,
-    },
-    'target_conditions': [
-      # This part is shared between the targets defined below.
-      ['gles2_utils_target==1', {
-        'defines': [
-          'GLES2_UTILS_IMPLEMENTATION',
-        ],
-        'sources': [
-          'common/gles2_cmd_format.h',
-          'common/gles2_cmd_utils.cc',
-          'common/gles2_cmd_utils.h',
-          'common/gles2_utils_export.h',
-        ],
-      }],
-    ],
-  },
-}