[Cronet] Strip debug symbols from i386 static framework for iOS.

components/cronet/tools/hide_symbols.py

 #!/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.
@@ skipping 71 matching lines @@
     # 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)
+      # Strip debug info from output lib so its size doesn't exceed 512mb.
+      command = [
+        'xcrun', 'strip', '-S', options.output_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()