Revert of Brotli compression used on about credits html file.

third_party/brotli/brotli.gyp

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'brotli',
       'type': 'static_library',
       'include_dirs': [
@@ skipping 15 matching lines @@
         'dec/state.h',
         'dec/transform.h',
         'dec/types.h',
       ],
       'conditions': [
         ['os_posix==1 and (target_arch=="arm" or target_arch=="armv7" or target_arch=="arm64")', {
           'cflags!': ['-Os'],
           'cflags': ['-O2'],
         }],
       ],
-      'toolsets': ['host', 'target'],
     },
     {
       'target_name': 'bro',
       'type': 'executable',
       'dependencies': [
         'brotli',
       ],
       'sources': [
         'enc/backward_references.cc',
         'enc/backward_references.h',
@@ skipping 35 matching lines @@
         'enc/static_dict_lut.h',
         'enc/streams.cc',
         'enc/streams.h',
         'enc/transform.h',
         'enc/types.h',
         'enc/utf8_util.cc',
         'enc/utf8_util.h',
         'enc/write_bits.h',
         'tools/bro.cc',
       ],
-      'toolsets': ['host'],
       'conditions': [
-        ['OS=="win" and MSVS_VERSION == "2015"', {
-          # Disabling "result of 32-bit shift implicitly converted to 64 bits",
-          # caused by code like: foo |= (1 << i);   // warning 4334
-          'msvs_disabled_warnings': [ 4334, ],
+        ['OS=="win"', {
+          'msvs_settings': {
+            'VCCLCompilerTool': {
+              'AdditionalOptions': [ '/EHsc', ],
+            },
+          },
+        }],
+        ['os_posix==1', {
+          'cflags_cc!': [ '-fno-exceptions', ],
         }],
       ],
     }
   ],
 }