Revert of [coverage] Filter some files from instrumentation.

build/coverage_wrapper.py

Index: build/coverage_wrapper.py
diff --git a/build/coverage_wrapper.py b/build/coverage_wrapper.py
deleted file mode 100755
index c1db754c94c1b4c323bda1551f482d007dc0fb50..0000000000000000000000000000000000000000
--- a/build/coverage_wrapper.py
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/usr/bin/env python
-# Copyright 2016 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# CC/CXX wrapper script that excludes certain file patterns from coverage
-# instrumentation.
-
-import re
-import subprocess
-import sys
-
-exclusions = [
-  'src/third_party',
-  'third_party',
-  'test',
-  'testing',
-]
-
-args = sys.argv[1:]
-text = ' '.join(sys.argv[2:])
-for exclusion in exclusions:
-  if re.search(r'\-o obj/%s[^ ]*\.o' % exclusion, text):
-    args.remove('-fprofile-arcs')
-    args.remove('-ftest-coverage')
-    break
-
-sys.exit(subprocess.check_call(args))