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

gpu/tools/tools.gyp

-# 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.
-
-{
-  'variables': {
-    'chromium_code': 1,
-  },
-  'targets': [
-  ],
-  'conditions': [
-    ['OS == "linux" and target_arch != "arm" and use_x11==1', {
-      'targets': [
-        {
-          # GN: //gpu:compositor_model_bench
-          'target_name': 'compositor_model_bench',
-          'type': 'executable',
-          'dependencies': [
-            '../../base/base.gyp:base',
-            '../../build/linux/system.gyp:x11',
-            '../../ui/gl/gl.gyp:gl',
-          ],
-          'libraries': [
-            '-lGL',
-            '-ldl',
-          ],
-          'sources': [
-            'compositor_model_bench/compositor_model_bench.cc',
-            'compositor_model_bench/forward_render_model.cc',
-            'compositor_model_bench/render_model_utils.cc',
-            'compositor_model_bench/render_models.cc',
-            'compositor_model_bench/render_tree.cc',
-            'compositor_model_bench/shaders.cc',
-          ],
-        },
-      ],
-    }],
-  ],
-}