Delete all test isolate file.

chrome/gles2_conform_test.isolate

-# Copyright 2013 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.
-{
-  'includes': [
-    '../base/base.isolate',
-    '../ui/gl/gl.isolate',
-  ],
-  'conditions': [
-    # TODO(kbr): add Android when these tests are run on those bots.
-    ['OS=="linux" or OS=="mac" or OS=="win"', {
-      'variables': {
-        'command': [
-          '<(PRODUCT_DIR)/gles2_conform_test<(EXECUTABLE_SUFFIX)',
-        ],
-        'files': [
-          '../gpu/gles2_conform_support/gles2_conform_test_expectations.txt',
-        ],
-      },
-    }],
-    # .isolate format doesn't support nested conditions.
-    ['(OS=="linux" or OS=="mac" or OS=="win") and internal_gles2_conform_tests==1', {
-      'variables': {
-        'files': [
-          '../third_party/gles2_conform/GTF_ES/',
-          '<(PRODUCT_DIR)/gles2_conform_test_windowless<(EXECUTABLE_SUFFIX)',
-          # Could add gles2_conform_test_angle or
-          # gles2_conform_test_chromeos if the bots were testing those.
-        ],
-      },
-    }],
-  ],
-}