Revert of [Cronet] Build static libcronet.a for iOS with complete dependencies.

components/cronet/tools/hide_symbols.py

Index: components/cronet/tools/hide_symbols.py
diff --git a/components/cronet/tools/hide_symbols.py b/components/cronet/tools/hide_symbols.py
deleted file mode 100755
index 55e7fb81c2bab1d8042c197c09c9daca0091acb7..0000000000000000000000000000000000000000
--- a/components/cronet/tools/hide_symbols.py
+++ /dev/null
@@ -1,101 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright 2017 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.
-
-# Create a static library which exposes only symbols which are explicitly marked
-# as visible e.g., by __attribute__((visibility("default"))).
-#
-# See BUILD.gn in this directory for usage example.
-#
-# This way, we can reduce risk of symbol conflict when linking it into apps
-# by exposing internal symbols, especially in third-party libraries.
-
-import optparse
-import os
-import subprocess
-
-
-# Mapping from GN's target_cpu attribute to ld's -arch parameter.
-# Taken from the definition of config("compiler") in:
-#   //build/config/mac/BUILD.gn
-GN_CPU_TO_LD_ARCH = {
-  'x64': 'x86_64',
-  'x86': 'i386',
-  'armv7': 'armv7',
-  'arm': 'armv7',
-  'arm64': 'arm64',
-}
-
-
-def main():
-  parser = optparse.OptionParser()
-  parser.add_option(
-      '--input_libs',
-      help='Comma-separated paths to input .a files which contain symbols '
-           'which must be always linked.')
-  parser.add_option(
-      '--deps_lib',
-      help='The path to a complete static library (.a file) which contains all '
-           'dependencies of --input_libs. .o files in this library are also '
-           'added to the output library, but only if they are referred from '
-           '--input_libs.')
-  parser.add_option(
-      '--output_obj',
-      help='Outputs the generated .o file here. This is an intermediate file.')
-  parser.add_option(
-      '--output_lib',
-      help='Outputs the generated .a file here.')
-  parser.add_option(
-      '--current_cpu',
-      help='The current processor architecture in the format of the target_cpu '
-           'attribute in GN.')
-  (options, args) = parser.parse_args()
-  assert not args
-
-  # ld -r concatenates multiple .o files and .a files into a single .o file,
-  # while "hiding" symbols not marked as visible.
-  command = [
-    'xcrun', 'ld',
-    '-arch', GN_CPU_TO_LD_ARCH[options.current_cpu],
-    '-r',
-  ]
-  for input_lib in options.input_libs.split(','):
-    # By default, ld only pulls .o files out of a static library if needed to
-    # resolve some symbol reference. We apply -force_load option to input_lib
-    # (but not to deps_lib) to force pulling all .o files.
-    command += ['-force_load', input_lib]
-  command += [
-    options.deps_lib,
-    '-o', options.output_obj
-  ]
-  try:
-    subprocess.check_call(command)
-  except subprocess.CalledProcessError:
-    # Work around LD failure for x86 Debug buiilds when it fails with error:
-    # ld: scattered reloc r_address too large for architecture i386
-    if options.current_cpu == "x86":
-      # Combmine input lib with dependencies into output lib.
-      command = [
-        'xcrun', 'libtool', '-static', '-no_warning_for_no_symbols',
-        '-o', options.output_lib,
-        options.input_libs, options.deps_lib,
-      ]
-      subprocess.check_call(command)
-      return
-
-  if os.path.exists(options.output_lib):
-    os.remove(options.output_lib)
-
-  # Creates a .a file which contains a single .o file.
-  command = [
-    'xcrun', 'ar', '-r',
-    options.output_lib,
-    options.output_obj,
-  ]
-  subprocess.check_call(command)
-
-
-if __name__ == "__main__":
-  main()