Remove all gyp[i] files in //chrome

chrome/chrome_gpu.gypi

-# Copyright 2016 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.
-
-{
-  'targets': [
-    {
-      # GN version: //chrome/gpu
-      'target_name': 'gpu',
-      'type': 'static_library',
-      'include_dirs': [
-        '..',
-        '<(grit_out_dir)',
-      ],
-      'sources': [
-        'gpu/chrome_content_gpu_client.cc',
-        'gpu/chrome_content_gpu_client.h',
-      ],
-      'dependencies': [
-        '../content/content.gyp:content_common',
-        '../content/content.gyp:content_gpu',
-        '../media/media.gyp:media_gpu',
-      ],
-      'conditions': [
-        ['chromeos==1', {
-          'dependencies': [
-            '../components/components.gyp:arc_mojo_bindings',
-          ],
-          'sources': [
-            'gpu/arc_gpu_video_decode_accelerator.cc',
-            'gpu/arc_gpu_video_decode_accelerator.h',
-            'gpu/arc_video_accelerator.h',
-            'gpu/gpu_arc_video_service.cc',
-            'gpu/gpu_arc_video_service.h',
-          ],
-        }],
-      ],
-    },
-  ],
-}